<!-- ============================================================= -->
<!--  MODULE:    Common (Shared) Elements Module                   -->
<!--  VERSION:   3.0                                               -->
<!--  DATE:      Feb 2008                                          -->
<!--                                                               -->
<!-- ============================================================= -->

<!-- ============================================================= -->
<!--                    PUBLIC DOCUMENT TYPE DEFINITION            -->
<!--                        TYPICAL INVOCATION                     -->
<!--
"-//NLM//DTD Archiving and Interchange DTD Suite Common (Shared) Elements Module v3.0 20080202//EN"
Delivered as file "common3.ent"                                    -->
<!-- ============================================================= -->



<!-- ============================================================= -->
<!-- SYSTEM:     Archiving and Interchange DTD Suite               -->
<!--                                                               -->
<!-- PURPOSE:    Defines the common parameter entities, calls the  -->
<!--             shared modules (such as special characters and    -->
<!--             notations) and provides declarations for elements -->
<!--             that do not properly fit into one class, since    -->
<!--             they can be used at more than one structural level-->
<!--                                                               -->
<!-- CONTAINS:   1) Default classes for elements defined in this   -->
<!--                module.  May be overridden by values in the    -->
<!--                DTD's Customization Module                     -->
<!--             2) Parameter Entities for attribute values        -->
<!--             3) Parameter Entities for content models          -->
<!--             4) Parameter Entities for attribute lists         -->
<!--             5) Elements used in many modules/classes          -->
<!--                  - Address elements                           -->
<!--                  - Date elements                              -->
<!--                  - Personal name elements                     -->
<!--                  - Common metadata elements (shared by both   -->
<!--                      article metadata and bibliographic       -->
<!--                      reference metadata                       -->
<!--                                                               -->
<!-- MODULES REQUIRED:                                             -->
<!--             1) Standard XML Special Characters Module         -->
<!--                                       (%xmlspecchars.ent;)    -->
<!--             2) Custom XML Special Characters (%chars.ent;)    -->
<!--             3) Notation Declarations    (%notat.ent;)         -->
<!--                                                               -->
<!-- CREATED FOR:                                                  -->
<!--             Digital archives and publishers who wish to       -->
<!--             create a custom XML DTD for original markup of    -->
<!--             journal literature, books, and related material,  -->
<!--             or for archiving and transferring such material   -->
<!--             between archives.                                 -->
<!--                                                               -->
<!--             This DTD is in the public domain. An organization -->
<!--             that wishes to create its own DTD from the suite  -->
<!--             may do so without permission from NLM.            -->
<!--                                                               -->
<!--             The suite has been set up to be extended using a  -->
<!--             new DTD file and a new DTD-specific customization -->
<!--             module to redefine the many Parameter Entities.   -->
<!--             Do not modify the suite directly or redistribute  -->
<!--             modified versions of the suite.                   -->
<!--                                                               -->
<!--             In the interest of maintaining consistency and    -->
<!--             clarity for potential users, NLM requests:        -->
<!--                                                               -->
<!--             1. If you create a DTD from the Archiving and     -->
<!--                Interchange DTD Suite and intend to stay       -->
<!--                compatible with the suite, then please include -->
<!--                the following statement as a comment in all of -->
<!--                your DTD modules:                              -->
<!--                   "Created from, and fully compatible with,   -->
<!--                    the Archiving and Interchange DTD Suite."  -->
<!--                                                               -->
<!--             2. If you alter one or more modules of the suite, -->
<!--                then please rename your version and all its    -->
<!--                modules to avoid any confusion with the        -->
<!--                original suite. Also, please include the       -->
<!--                following statement as a comment in all your   -->
<!--                DTD modules:                                   -->
<!--                   "Based in part on, but not fully compatible -->
<!--                    with, the Archiving and Interchange DTD    --> 
<!--                    Suite."                                    -->
<!--                                                               -->
<!-- ORIGINAL CREATION DATE:                                       -->
<!--             December 2002                                     -->
<!--                                                               -->
<!-- CREATED BY: Jeff Beck       (NCBI)                            -->
<!--             Deborah Lapeyre (Mulberry Technologies, Inc.)     -->
<!--             Bruce Rosenblum (Inera Inc.)                      -->
<!--                                                               -->
<!--             NLM thanks the Harvard University Libraries, both -->
<!--             for proposing that a draft archiving NLM DTD for  --> 
<!--             life sciences journals be extended to accommodate -->
<!--             journals in all disciplines and for sponsoring    -->
<!--             Bruce Rosenblum's collaboration with other DTD    -->
<!--             authors in completing Version 1.0. The Andrew W.  --> 
<!--             Mellon Foundation provided support for these      --> 
<!--                                                               -->
<!--             Suggestions for refinements and enhancements to   -->
<!--             the DTD suite should be sent in email to:         -->
<!--                 archive-dtd@ncbi.nlm.nih.gov                  -->
<!--             important contributions.                          -->
<!--                                                               -->
<!-- ============================================================= -->


<!-- ============================================================= -->
<!--                    DTD VERSION/CHANGE HISTORY                 -->
<!-- ============================================================= -->
<!--

     =============================================================

Version  Reason/Occasion                   (who) vx.x (yyyy-mm-dd)

     =============================================================
     Version 3.0                       (DAL/BTU) v3.0 (2007-10-31)
     
     Version 3.0 is the first non-backward-compatible release.
     In addition to the usual incremental changes, some
     elements and attributes have been renamed and/or remodeled
     to better meet user needs and to increase tag set consistency.
     All module change histories are available through the Tag Suite 
     web site at http://dtd.nlm.nih.gov. 

     Details on version 3.0 are available at 
           http://dtd.nlm.nih.gov/3.0.
  
  1. Updated public identifier to "v3.0 20080202//EN"              -->


<!-- ============================================================= -->
<!--                    PARAMETER ENTITIES FOR ATTRIBUTE VALUES    -->
<!-- ============================================================= -->


<!--                    ARTICLE/PUBLICATION IDENTIFIER TYPES       -->
<!--                    The "pub-id-type" attribute names the
                        type of identifier, or the organization or 
                        system that defined this identifier for the 
                        identifier of the journal article or a 
                        cited publication.                         -->
<!ENTITY % pub-id-types  "art-access-id | coden | doaj | doi |
                          manuscript | medline | other | pii | 
                          pmcid |  pmid | publisher-id | sici"       >


<!-- ============================================================= -->
<!--                    PARAMETER ENTITIES FOR FULL CONTENT MODELS -->
<!-- ============================================================= -->


<!--                    DATE ELEMENTS MODEL                        -->
<!--                    The content models for elements that describe
                        dates, such as Publication Date <pub-date>
                        and History Dates <date>.                  -->
<!ENTITY % date-model   "( ( (day?, month?) | season)?,
                          year?, string-date?)"                      >


<!--                    CONTENT MODEL FOR A STRUCTURAL SECTION     -->
<!--                    The model for a section that requires that a
                        section title be present, used for elements
                        such as Section and Appendix.              -->
<!ENTITY % sec-model    "(sec-meta?, label?, title, (%para-level;)*, 
                          (%sec-level;)*, 
                          (%sec-back-matter-mix;)* )"                >


<!--                    CONTENT MODEL FOR A SECTION METADATA       -->
<!--                    In some works, each section has a different
                        author or some sections are authored by 
                        different contributors from the enclosing
                        article. This wrapper element for 
                        section-level metadata is used to capture
                        information such as those contributors.
                                                                   -->
<!ENTITY % sec-meta-model
                        "(contrib-group*, kwd-group*, 
                          permissions?)"                             >


<!--                    CONTENT MODEL FOR AN UNTITLED SECTION      -->
<!--                    The model for a section-like structure that
                        may or may not have an initial title       -->
<!ENTITY % sec-opt-title-model
                        "(sec-meta?, label?, title?, (%para-level;)*,  
                          (%sec-level;)*, 
                          (%sec-back-matter-mix;)* )"                >


<!-- ============================================================= -->
<!--                    PARAMETER ENTITIES FOR MIXED CONTENT       -->
<!-- ============================================================= -->


<!--                    LINK ELEMENTS                              -->
<!--                    Elements for use in the linking elements
                        such as <xref>, <target>, and <ext-link>   -->
<!ENTITY % link-elements 
                        "| %emphasis.class; | %phrase-content.class; |
                         %subsup.class;"                             > 


<!--                    PARAGRAPH ELEMENTS                         -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a paragraph <p>. 
                        Design Note: There is a major overlap between 
                        this parameter entity and the mix for elements
                        that are at the same level as a paragraph.
                        Inline elements appear only inside a 
                        paragraph, but block elements such as quotes 
                        and lists may appear either within a 
                        paragraph or at the same level as a 
                        paragraph. This serves a requirement in a 
                        repository DTD, since some incoming material 
                        will have restricted such elements to only 
                        inside a paragraph, some incoming material 
                        will have restricted them to only outside a 
                        paragraph and some may allow them in both
                        places. Thus the DTD must allow for them to
                        be in either or both.                      
                        Design Note: Inline mixes begin with an
                        OR bar                                     -->
<!ENTITY % p-elements   "| %address-link.class; | 
                         %article-link.class; |
                         %block-display.class; | %block-math.class; | 
                         %citation.class; |  %emphasis.class; | 
                         %funding.class; |  %inline-math.class; | 
                         %inline-display-noalt.class; | 
                         %list.class; | %math.class; | 
                         %phrase.class; | %rest-of-para.class; | 
                         %simple-link.class; | 
                         %subsup.class;"                             >


<!--                    TITLE ELEMENTS                             -->
<!--                    Elements for use in all the title elements
                        such as <title>, <subtitle>, <trans-title>,
                        etc.                       
                        Design Note: All inline mixes begin with an
                        OR bar, but since %simple-phrase; is an 
                        inline mix, the OR bar is already there.   -->
<!ENTITY % title-elements   
                        "%simple-phrase; | %break.class;"            > 


<!-- ============================================================= -->
<!--                    PARAMETER ENTITIES FOR LINKING ATTRIBUTES  -->
<!-- ============================================================= -->
              

<!--                    XLINK LINK ATTRIBUTES                      -->
<!--                    Used for elements that are a link by
                        definition, such as the <xref> element.    -->       
<!ENTITY % link-atts
            "xmlns:xlink CDATA                            #FIXED
                                     'http://www.w3.org/1999/xlink'
             xlink:type  (simple)                   #FIXED 'simple'
             xlink:href  CDATA                            #REQUIRED 
             xlink:role  CDATA                            #IMPLIED
             xlink:title CDATA                            #IMPLIED
             xlink:show  (embed | new | none | other | replace)
                                                          #IMPLIED
             xlink:actuate   
                         (none | onLoad | onRequest | other)          
                                                           #IMPLIED" >


<!--                    MIGHT LINK XLINK ATTRIBUTES                -->
<!--                    Used for elements which may need to link to
                        external sources or other objects within
                        the document, but may not necessarily act 
                        as a link at all.  The attribute
                        "xlink:href" identifies the object to which 
                        the link points.                           -->
<!ENTITY % might-link-atts
            "xmlns:xlink CDATA                             #FIXED
                                     'http://www.w3.org/1999/xlink'
             xlink:type  (simple)                   #FIXED 'simple'
             xlink:href  CDATA                             #IMPLIED 
             xlink:role  CDATA                             #IMPLIED
             xlink:title CDATA                             #IMPLIED
             xlink:show  (embed | new | none | other | replace)
                                                           #IMPLIED
             xlink:actuate   
                         (none | onLoad | onRequest | other)          
                                                           #IMPLIED" >


<!-- ============================================================= -->
<!--                    PARAMETER ENTITIES FOR ATTRIBUTES LISTS    -->
<!--                    (ALPHABETICAL ORDER)                       -->
<!-- ============================================================= -->
                                                                
                                                                 
<!--                    AFFILIATION ATTRIBUTES                     -->
<!--                    Attributes for the <ack> element           -->
<!ENTITY % ack-atts                                
            "id         ID                                 #IMPLIED
             specific-use
                        CDATA                              #IMPLIED
             content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    ADDRESS ATTRIBUTES                         -->
<!--                    Attributes for the <address> element       -->
<!ENTITY % address-atts
            "id         ID                                 #IMPLIED
             specific-use
                        CDATA                              #IMPLIED
             content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    ADDRESS LINE ATTRIBUTES                    -->
<!--                    Attributes for the <addr-line> element     -->
<!ENTITY % addr-line-atts
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    AFFILIATION ATTRIBUTES                     -->
<!--                    Attributes for the Affiliation <aff> 
                        element                                    -->
<!ENTITY % aff-atts
            "id         ID                                 #IMPLIED
             content-type   
                        CDATA                              #IMPLIED
             rid        IDREFS                             #IMPLIED" >
                                                                
                                                                 
<!--                    ALTERNATE TEXT ATTRIBUTES                  -->
<!--                    Attributes for the <alt-text> element      -->
<!ENTITY % alt-text-atts
            "id         ID                                 #IMPLIED
             content-type
                        CDATA                              #IMPLIED
             xml:lang   NMTOKEN                            #IMPLIED" > 
                                                                
                                                                 
<!--                    ARTICLE TITLE ATTRIBUTES                   -->
<!--                    Attributes for the <article-title> element -->
<!ENTITY % article-title-atts
            "id         ID                                 #IMPLIED
             xml:lang   NMTOKEN                            #IMPLIED" > 
                                                                
                                                                 
<!--                    ATTRIBUTION ATTRIBUTES                     -->
<!--                    Attributes for the <attrib> element        -->
<!ENTITY % attrib-atts                                
            "id         ID                                 #IMPLIED
             specific-use
                        CDATA                              #IMPLIED" >

                                                                
<!--                    BIOGRAPHY ATTRIBUTES                       -->
<!--                    Attributes for <bio> element               -->
<!ENTITY % bio-atts
            "id         ID                                 #IMPLIED
             rid        IDREFS                             #IMPLIED
             content-type
                        CDATA                              #IMPLIED
             specific-use
                        CDATA                              #IMPLIED
             %might-link-atts;"                                     >

                                                                
<!--                    CITATION ATTRIBUTES                        -->
<!--                    Attributes for all three types of
                        citations (<mixed-citation>, 
                        <element-citation>, and <nlm-citation>).   -->
<!ENTITY % citation-atts
             "id        ID                                 #IMPLIED
              publication-type   
                        CDATA                              #IMPLIED  
              publisher-type   
                        CDATA                              #IMPLIED  
              publication-format   
                        CDATA                              #IMPLIED  
              %might-link-atts;"                                     >

                                                                
<!--                    COLLABORATION ATTRIBUTES                   -->
<!--                    Attributes for <collab>                    -->
<!ENTITY % collab-atts
            "collab-type       
                        CDATA                             #IMPLIED  
             id         ID                                #IMPLIED
             %might-link-atts;"                                      >
                                                                                                                                
                                                                 
<!--                    CONFERENCE ACRONYM ATTRIBUTES              -->
<!--                    Attributes for the <conf-acronym> element  -->
<!ENTITY % conf-acronym-atts
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    CONFERENCE DATE ATTRIBUTES                 -->
<!--                    Attributes for the <conf-date> element     -->
<!ENTITY % conf-date-atts
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    CONFERENCE LOCATION ATTRIBUTES             -->
<!--                    Attributes for the <conf-loc> element      -->
<!ENTITY % conf-loc-atts
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    CONFERENCE NAME ATTRIBUTES                 -->
<!--                    Attributes for the <conf-name> element     -->
<!ENTITY % conf-name-atts
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    CONFERENCE NUMBER ATTRIBUTES               -->
<!--                    Attributes for the <conf-num> element      -->
<!ENTITY % conf-num-atts
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    CONFERENCE SPONSOR ATTRIBUTES              -->
<!--                    Attributes for the <conf-sponsor> element  -->
<!ENTITY % conf-sponsor-atts
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    CONFERENCE THEME ATTRIBUTES                -->
<!--                    Attributes for the <conf-theme> element    -->
<!ENTITY % conf-theme-atts
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    CONFERENCE ATTRIBUTES                      -->
<!--                    Attributes for the <conference> element    -->
<!ENTITY % conference-atts
            "content-type
                        CDATA                              #IMPLIED
             %might-link-atts;"                                      >
                                                                
                                                                                                                                     
<!--                    COPYRIGHT HOLDER ATTRIBUTES                -->
<!--                    Attributes for the <copyright-holder> 
                        element                                    -->
<!ENTITY % copyright-holder-atts
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    COPYRIGHT STATEMENT ATTRIBUTES             -->
<!--                    Attributes for the <copyright-statement> 
                        element                                    -->
<!ENTITY % copyright-statement-atts
            "content-type
                        CDATA                              #IMPLIED
             specific-use
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    COPYRIGHT YEAR ATTRIBUTES                  -->
<!--                    Attributes for the <copyright-year> 
                        element                                    -->
<!ENTITY % copyright-year-atts
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    COUNTRY ATTRIBUTES                         -->
<!--                    Attributes for the <country> element       -->
<!ENTITY % country-atts
            "content-type
                        CDATA                              #IMPLIED
             country    CDATA                              #IMPLIED" >

             
<!--                    CUSTOM METADATA ATTRIBUTES                 -->
<!--                    Attributes for the <custom-meta> element   -->
<!ENTITY % custom-meta-atts
            "id         ID                                 #IMPLIED 
             specific-use
                        CDATA                              #IMPLIED
             %might-link-atts;"                                      >


<!--                    DATE (HISTORICAL) ATTRIBUTES               -->
<!--                    Attributes for the <date> element          -->
<!ENTITY % date-atts
             "date-type CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    DAY ATTRIBUTES                             -->
<!--                    Attributes for the <day> element           -->
<!ENTITY % day-atts
            "content-type
                        CDATA                              #IMPLIED" >


<!--                    DEFINITION LIST: DEFINITION ATTRIBUTES     -->
<!--                    Attribute list for the <def> element       -->
<!ENTITY % def-atts                                
            "rid        IDREFS                             #IMPLIED 
             id         ID                                 #IMPLIED" >


<!--                    ELECTRONIC LOCATION IDENTIFIER ATTRIBUTES  
                        Attribute list for the <elocation-id> 
                        element                                    -->
<!ENTITY % elocation-id-atts
            "content-type
                        CDATA                              #IMPLIED 
             seq        CDATA                              #IMPLIED" >


<!--                    EMAIL ATTRIBUTES                           --> 
<!--                    Attribute list for the <email> element     -->
<!ENTITY % email-atts
            "content-type
                        CDATA                              #IMPLIED
             specific-use
                        CDATA                              #IMPLIED
             %might-link-atts;"                                      >


<!--                    EXTERNAL LINK ATTRIBUTES                   -->
<!--                    Attribute list for external links, such as
                        <ext-link>                                 -->
<!ENTITY % ext-link-atts
             "id        ID                                 #IMPLIED
              ext-link-type 
                        CDATA                              #IMPLIED
              specific-use
                        CDATA                              #IMPLIED
              %might-link-atts;"                                     >


<!--                    FAX ATTRIBUTES                             --> 
<!--                    Attribute list for the <fax> element       -->
<!ENTITY % fax-atts
            "content-type
                        CDATA                              #IMPLIED" >


<!--                    FIRST PAGE ATTRIBUTES                      -->
<!--                    Attribute list for the <fpage> element     -->
<!ENTITY % fpage-atts
            "content-type
                        CDATA                              #IMPLIED 
              seq       CDATA                              #IMPLIED" >


<!--                    GIVEN NAMES ATTRIBUTES                     -->
<!--                    Attribute list for the <given-names> element
                                                                   -->
<!ENTITY % given-names-atts
             "initials  CDATA                              #IMPLIED" >


<!--                    INSTITUTION ATTRIBUTES                     -->
<!--                    Attribute list for <institution>           -->
<!ENTITY % institution-atts
            "id         ID                                 #IMPLIED  
             content-type
                        CDATA                              #IMPLIED 
             %might-link-atts;"                                      > 
                                                                
                                                                 
<!--                    ISBN ATTRIBUTES                            -->
<!--                    Attributes for the <isbn> element          -->
<!ENTITY % isbn-atts
             "content-type
                        CDATA                             #IMPLIED"  >


<!--                    ISSN ATTRIBUTES                            -->
<!--                    Attribute list for <issn> (and <isbn> in
                        Book)                                      -->
<!ENTITY % issn-atts
             "pub-type   CDATA                           #IMPLIED"   >


<!--                    ISSUE ATTRIBUTES                           -->
<!--                    Attribute list for the <issue> element     -->
<!ENTITY % issue-atts
             "content-type
                        CDATA                              #IMPLIED 
              seq       CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    ISSUE IDENTIFIER ATTRIBUTES                -->
<!--                    Attributes for the <issue-id> element      -->
<!ENTITY % issue-id-atts
             "pub-id-type
                        CDATA                              #IMPLIED
              content-type
                        CDATA                              #IMPLIED" > 


<!--                    ISSUE SPONSOR ATTRIBUTES                   -->
<!--                    Attribute list for <issue-sponsor> element -->
<!ENTITY % issue-sponsor-atts
             "content-type
                        CDATA                              #IMPLIED" >


<!--                    ISSUE TITLE ATTRIBUTES                     -->
<!--                    Attribute list for <issue-title> element   -->
<!ENTITY % issue-title-atts
             "content-type
                        CDATA                              #IMPLIED" >


<!--                    JOURNAL IDENTIFIER ATTRIBUTES              -->
<!--                    Attribute list for journal identifier 
                        <journal-id> element                       -->
<!ENTITY % journal-id-atts
             "journal-id-type  
                        CDATA                            #IMPLIED  " > 
                                                                
                                                                 
<!--                    LICENSE ATTRIBUTES                         -->
<!--                    Attributes for the <license> element       -->
<!ENTITY % license-atts
            "license-type  
                        CDATA                              #IMPLIED
             %might-link-atts;"                                      >


<!--                    LONG DESCRIPTION ATTRIBUTES                -->
<!--                    Attributes for the <long-desc> element     -->
<!ENTITY % long-desc-atts                                
            "id         ID                                 #IMPLIED
             content-type
                        CDATA                              #IMPLIED
             xml:lang   NMTOKEN                            #IMPLIED" > 
                                                                
                                                                 
<!--                    LPAGE ATTRIBUTES                           -->
<!--                    Attributes for the <lpage> element         -->
<!ENTITY % lpage-atts                                
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    MONTH ATTRIBUTES                           -->
<!--                    Attributes for the <month> element         -->
<!ENTITY % month-atts
            "content-type
                        CDATA                              #IMPLIED" >


<!--                    NAME ATTRIBUTES                            -->
<!--                    Attribute list for the <name> element      -->
<!ENTITY % name-atts
            "content-type
                        CDATA                              #IMPLIED
             name-style (western | eastern | islensk)     'western'" >


<!--                    NOTES ATTRIBUTES                           -->
<!--                    Attribute list for the <note> element      -->
<!ENTITY % notes-atts
            "id         ID                                #IMPLIED
             notes-type CDATA                             #IMPLIED
             specific-use
                        CDATA                             #IMPLIED"  >
                                                                
                                                                 
<!--                    OBJECT IDENTIFIER ATTRIBUTES               -->
<!--                    Attributes for the <object-id> element     -->
<!ENTITY % object-id-atts
            "pub-id-type
                        CDATA                              #IMPLIED
             content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    PAGE RANGE ATTRIBUTES                      -->
<!--                    Attributes for the <page-range> element    -->
<!ENTITY % page-range-atts                                
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    PHONE ATTRIBUTES                           -->
<!--                    Attributes for the <phone> element         -->
<!ENTITY % phone-atts                                
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                                                                                 
<!--                    PRICE ATTRIBUTES                           -->
<!--                    Attributes for the <price> element         -->
<!ENTITY % price-atts                                
            "currency   CDATA                              #IMPLIED 
             content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                                                                                 
<!--                    PUBLISHER ATTRIBUTES                       -->
<!--                    Attributes for the <publisher> element     -->
<!ENTITY % publisher-atts                                
            "content-type
                        CDATA                              #IMPLIED" >

                                                                
<!--                    RELATED ARTICLE ATTRIBUTES                 -->
<!--                    Attributes for <related-article>           -->
<!ENTITY % related-article-atts
             "id        ID                                #IMPLIED
              related-article-type
                        CDATA                             #REQUIRED
              ext-link-type 
                        CDATA                             #IMPLIED
              specific-use
                        CDATA                             #IMPLIED
              vol       CDATA                             #IMPLIED
              page      CDATA                             #IMPLIED  
              issue     CDATA                             #IMPLIED
              elocation-id
                        CDATA                             #IMPLIED
              journal-id
                        CDATA                             #IMPLIED  
              %journal-id-atts;
              %might-link-atts;"                                     >
                                                                
                                                                 
<!--                    ROLE ATTRIBUTES                            -->
<!--                    Attributes for the <role> element          -->
<!ENTITY % role-atts                                
            "content-type
                        CDATA                              #IMPLIED" >
                                                                
                                                                 
<!--                    SEASON ATTRIBUTES                          -->
<!--                    Attributes for the <season> element        -->
<!ENTITY % season-atts
            "content-type
                        CDATA                              #IMPLIED" >

                                                                
<!--                    SIGNATURE ATTRIBUTES                       -->
<!--                    Attributes for the <sig> element           -->
<!ENTITY % sig-atts
             "id        ID                                #IMPLIED
              rid       IDREFS                            #IMPLIED
              content-type
                        CDATA                             #IMPLIED"  >

                                                                
<!--                    SIGNATURE BLOCK ATTRIBUTES                 -->
<!--                    Attributes for the <sig-block> element     -->
<!ENTITY % sig-block-atts
             "id        ID                                #IMPLIED
              rid       IDREFS                            #IMPLIED
              content-type
                        CDATA                             #IMPLIED 
              specific-use
                        CDATA                             #IMPLIED"  >

<!--                    SIZE ATTRIBUTES                            -->
<!--                    Attribute list for the <size> element      -->
<!ENTITY % size-atts
             "units     CDATA                             #REQUIRED" >

                                                                
<!--                    STRING DATE ATTRIBUTES                     -->
<!--                    Attributes for the <string-date> element   -->
<!ENTITY % string-date-atts
             "content-type
                        CDATA                             #IMPLIED" >
                                                                
                                                                 
<!--                    SUFFIX ATTRIBUTES                          -->
<!--                    Attributes for the <suffix> element        -->
<!ENTITY % suffix-atts
            "content-type
                        CDATA                              #IMPLIED" >


<!--                    SURNAME ATTRIBUTES                         -->
<!--                    Attribute list for the <surname> element   -->
<!ENTITY % surname-atts
             "initials  CDATA                             #IMPLIED"  >

                                                                
<!--                    TITLE ATTRIBUTES                           -->
<!--                    Attributes for the <title> and similar
                        elements                                   -->
<!ENTITY % title-atts
             "id        ID                                #IMPLIED
              content-type
                        CDATA                             #IMPLIED"  >


<!--                    TRANSLATED TITLE ATTRIBUTES                -->
<!--                    Attribute list for the <trans-title>       -->
<!ENTITY % trans-title-atts
             "id        ID                                 #IMPLIED 
              content-type
                        CDATA                              #IMPLIED
              xml:lang  NMTOKEN                            #IMPLIED">


<!--                    TRANSLATED TITLE GROUP ATTRIBUTES          -->
<!--                    Attribute list for the <trans-title-group> -->
<!ENTITY % trans-title-group-atts
             "id        ID                                 #IMPLIED 
              content-type
                        CDATA                              #IMPLIED
              xml:lang  NMTOKEN                            #REQUIRED">

                                                                
<!--                    URI ATTRIBUTES                             -->
<!--                    Attributes for the <uri> element           -->
<!ENTITY % uri-atts
             "content-type
                        CDATA                             #IMPLIED
              %might-link-atts;"                                     >


<!--                    VOLUME NUMBER ATTRIBUTES                   -->
<!--                    Attribute list for the <volume> element    -->
<!ENTITY % volume-atts
             "seq        CDATA                             #IMPLIED
              content-type
                         CDATA                             #IMPLIED" > 
                                                                
                                                                 
<!--                    VOLUME IDENTIFIER ATTRIBUTES               -->
<!--                    Attributes for the <volume-id> element     -->
<!ENTITY % volume-id-atts
             "pub-id-type
                        CDATA                              #IMPLIED
              content-type
                         CDATA                             #IMPLIED" > 


<!--                    VOLUME SERIES ATTRIBUTES                   -->
<!--                    Attribute list for the <volume-series> 
                        element                                    -->
<!ENTITY % volume-series-atts
             "content-type
                         CDATA                             #IMPLIED" > 
                                                                
                                                                 
<!--                    YEAR ATTRIBUTES                            -->
<!--                    Attributes for the <year> element          -->
<!ENTITY % year-atts                                
             "content-type
                        CDATA                              #IMPLIED" >


<!-- ============================================================= -->
<!--                    METADATA USED BY MORE THAN ONE CLASS       -->
<!-- ============================================================= -->


<!-- ============================================================= -->
<!--                    COMMON COPYRIGHT/PERMISSION ELEMENTS       -->
<!-- ============================================================= -->


<!--                    COPYRIGHT HOLDER ELEMENTS                  -->
<!--                    Elements to be mixed with data characters
                        inside the content model for the 
                        <copyright-holder> element.                -->
<!ENTITY % copyright-holder-elements 
                        "| %subsup.class;"                           > 


<!--                    COPYRIGHT HOLDER                           -->
<!--                    Name of the organizational or personal
                        entity that holds the copyright.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=copyright-holder
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=copyright-holder
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=copyright-holder
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=copyright-holder
                                                                   -->
<!ELEMENT  copyright-holder
                        (#PCDATA %copyright-holder-elements;)*       >
<!ATTLIST  copyright-holder
             %copyright-holder-atts;                                 >


<!--                    COPYRIGHT STATEMENT ELEMENTS               -->
<!--                    Content model for <copyright-statement>    -->
<!ENTITY % copyright-statement-elements 
                        "| %address-link.class; | %emphasis.class; | 
                         %phrase-content.class; | %subsup.class;"    > 


<!--                    COPYRIGHT STATEMENT                        -->
<!--                    Copyright notice or statement, suitable for
                        printing or display. Within the statement the
                        copyright year should be identified, if
                        expected to be displayed.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=copyright-statement
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=copyright-statement
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=copyright-statement
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=copyright-statement
                                                                   -->
<!ELEMENT  copyright-statement
                        (#PCDATA %copyright-statement-elements;)*    >
<!ATTLIST  copyright-statement
             %copyright-statement-atts;                              >


<!--                    COPYRIGHT YEAR                             -->
<!--                    Year of the copyright. Need not be used, if,
                        for example, having the year as part of the 
                        copyright statement is sufficient.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=copyright-year
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=copyright-year
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=copyright-year
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=copyright-year
                                                                   -->
<!ELEMENT  copyright-year    
                        (#PCDATA)                                    >
<!ATTLIST  copyright-year
             %copyright-year-atts;                                   >


<!--                    LICENSE MODEL                              -->
<!--                    Content model for an <license> element     -->
<!ENTITY % license-model
                        "((%license-p.class;)+)"                     > 


<!--                    LICENSE INFORMATION                        -->
<!--                    The set of conditions under which people are
                        allowed to use this article or other
                        license-related information or restrictions.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=license
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=license
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=license
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=license
                                                                   -->
<!ELEMENT  license      %license-model;                              >
<!ATTLIST  license  
             %license-atts;                                          >


<!--                    LICENSE PARAGRAPH ELEMENTS                 -->
<!--                    Elements that can be included with the text
                        inside a <license-p> element. 
                        Design Note: All inline mixes begin with an
                        OR bar, but since %p-elements; is an 
                        inline mix, the OR bar is already there.   -->
<!ENTITY % license-p-elements
                        "%p-elements; | %price.class;"               > 
 

<!--                    LICENSE PARAGRAPH                          -->
<!--                    Paragraphs of text within the description of 
                        a <license>. Not defined as an ordinary
                        paragraph, so that it can have special
                        content.  
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=license-p
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=license-p
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=license-p
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=license-p
                                                                   -->
<!ELEMENT  license-p    (#PCDATA %license-p-elements;)*              >


<!--                    PERMISSIONS MODEL                          -->
<!--                    Model for <permissions> wrapper element    -->
<!ENTITY % permissions-model 
                        "(copyright-statement*, copyright-year*, 
                          copyright-holder*, license*)"              > 


<!--                    PERMISSIONS                                -->
<!--                    Wrapper element to hold the copyright
                        information, license material, and any 
                        future similar metadata.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=permissions
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=permissions
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=permissions
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=permissions
                                                                   -->
<!ELEMENT  permissions
                        %permissions-model;                          >


<!-- ============================================================= -->
<!--                    COMMON METADATA/BIBLIOGRAPHIC ELEMENTS     -->
<!-- ============================================================= -->


<!--                    ARTICLE TITLE ELEMENTS                     -->
<!--                    Elements that can be included with the text
                        inside an <article-title> element.  
                        Design Note: All inline mixes begin with an
                        OR bar, but since %simple-phrase; is an 
                        inline mix, the OR bar is already there.   -->
<!ENTITY % article-title-elements   
                        "%simple-phrase; | %break.class;"            > 


<!--                    ARTICLE TITLE                              -->
<!--                    The title of the article in the language
                        in which the article was originally
                        published          
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=article-title
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=article-title
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=article-title
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=article-title
                                                                   -->
<!ELEMENT  article-title       
                        (#PCDATA %article-title-elements;)*          >
<!ATTLIST  article-title
             %article-title-atts;                                    > 


<!--                    AFFILIATION ELEMENTS                       -->
<!--                    Elements for use in the <aff> element      -->
<!ENTITY % aff-elements "| %address.class; | %address-link.class; |
                         %article-link.class; | %break.class; | 
                         %emphasis.class; | %label.class; |
                         %simple-link.class; | %subsup.class;"       > 


<!--                    AFFILIATION                                -->
<!--                    Name of a institution or organization such as
                        a university or corporation. 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=aff
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=aff
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=aff
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=aff
                                                                   -->
<!ELEMENT  aff          (#PCDATA %aff-elements;)*                    >
<!ATTLIST  aff
             %aff-atts;                                              >


<!--                    COLLABORATIVE (GROUP) AUTHOR ELEMENTS      -->
<!--                    Elements for use in the <collab> element
                        Design Note: All inline mixes begin with an
                        OR bar, but since %simple-text; is an inline
                        mix, the OR bar is already there.          -->
<!ENTITY % collab-elements 
                        "%simple-text; | %address.class; | 
                         %contrib-group.class; | 
                         %contrib-info.class; | %fn-link.class;"     > 


<!--                    COLLABORATIVE (GROUP) AUTHOR               -->
<!--                    Used for groups of authors credited under 
                        one name, either as a collaboration in the
                        strictest sense, or when an organization, 
                        institution, or corporation is the group.  
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=collab
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=collab
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=collab
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=collab
                                                                   -->
<!ELEMENT  collab       (#PCDATA %collab-elements;)*                 >
<!ATTLIST  collab
             %collab-atts;                                           >


<!--                    CONFERENCE DATE ELEMENTS                   -->
<!--                    Elements for use in the <conf-date> element-->
<!ENTITY % conf-date-elements 
                        "  "                                         > 
             

<!--                    CONFERENCE DATE                            -->
<!--                    The date(s) on which the conference was held.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=conf-date
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=conf-date
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=conf-date
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=conf-date
                                                                   -->
<!ELEMENT  conf-date    (#PCDATA %conf-date-elements;)*              >
<!ATTLIST  conf-date
             %conf-date-atts;                                        >


<!--                    CONFERENCE LOCATION ELEMENTS               -->
<!--                    Elements for use in the <conf-loc> element 
                        Design Note: All inline mixes begin with an
                        OR bar, but since %simple-text; is an inline
                        mix, the OR bar is already there.          -->
<!ENTITY % conf-loc-elements 
                        "%simple-text;"                            > 
 

<!--                    CONFERENCE LOCATION                        -->
<!--                    The physical location(s) of the conference.
                        This may include a city, a country, or a
                        campus or organization location if that is
                        the only location available.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=conf-loc
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=conf-loc
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=conf-loc
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=conf-loc
                                                                   -->
<!ELEMENT  conf-loc     (#PCDATA %conf-loc-elements;)*               >
<!ATTLIST  conf-loc
             %conf-loc-atts;                                         >


<!--                    CONFERENCE NAME ELEMENTS                   -->
<!--                    Elements for use in the <conf-name> element.
                        Design Note: All inline mixes begin with an
                        OR bar, but since %simple-text; is an inline
                        mix, the OR bar is already there.          -->
<!ENTITY % conf-name-elements 
                        "%simple-text;"                            > 


<!--                    CONFERENCE NAME                            -->
<!--                    The full name of the conference, including any
                        qualifiers such as "43rd Annual".
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=conf-name
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=conf-name
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=conf-name
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=conf-name
                                                                   -->
<!ELEMENT  conf-name    (#PCDATA %conf-name-elements;)*              >
<!ATTLIST  conf-name
             %conf-name-atts;                                        >


<!--                    OBJECT IDENTIFIER                          -->
<!--                    Used to record an identifier such as a DOI
                        for an interior element such as an <abstract>
                        or <figure>.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=object-id
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=object-id
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=object-id
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=object-id
                                                                   -->
<!ELEMENT  object-id    (#PCDATA)                                    >  
<!ATTLIST  object-id
             %object-id-atts;                                        >


<!--                    ISBN ELEMENTS                              -->
<!--                    Elements for use with data characters inside
                        the model for the <isbn> element           -->
<!ENTITY % isbn-elements 
                        ""                                           > 


<!--                    ISSN                                       -->
<!--                    International Standard Book Number 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=isbn
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=isbn
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=isbn
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=isbn
                                                                   -->
<!ELEMENT  isbn         (#PCDATA %isbn-elements;)*                   >
<!ATTLIST  isbn
             %isbn-atts;                                             >


<!--                    ISSN ELEMENTS                              -->
<!--                    Elements for use with data characters inside
                        the model for the <issue> element          -->
<!ENTITY % issn-elements 
                        ""                                           > 


<!--                    ISSN                                       -->
<!--                    International Standard Serial Number
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=issn
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=issn
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=issn
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=issn
                                                                   -->
<!ELEMENT  issn         (#PCDATA %issn-elements;)*                   >
<!ATTLIST  issn
             %issn-atts;                                             >


<!--                    ISSUE ELEMENTS                             -->
<!--                    Elements for use with data characters inside
                        the model for the <issue> element          -->
<!ENTITY % issue-elements 
                        "%just-rendition;"                           > 


<!--                    ISSUE NUMBER                               -->
<!--                    The issue number, issue name, or other 
                        identifier of an issue of a journal that
                        is displayed or printed with the issue. 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=issue
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=issue
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=issue
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=issue
                                                                   -->
<!ELEMENT  issue        (#PCDATA %issue-elements;)*                  >  
<!ATTLIST  issue
             %issue-atts;                                            >


<!--                    ISSUE IDENTIFIER                           -->
<!--                    Used to record an identifier such as a DOI
                        that describes an entire issue of a 
                        journal     
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=issue-id
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=issue-id
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=issue-id
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=issue-id
                                                                   -->
<!ELEMENT  issue-id     (#PCDATA)                                    >  
<!ATTLIST  issue-id
             %issue-id-atts;                                         >


<!--                    ISSUE PART ELEMENTS                        -->
<!--                    Elements that can be added to the text
                        within the element <issue-part>            -->
<!ENTITY % issue-part-elements 
                        "%just-rendition;"                           > 


<!--                    ISSUE PART                         -->
<!--                    A publisher may split an issue into two or 
                        more separately bound or separately issued 
                        parts. This element holds the identifiers
                        (titles, part numbers, etc.) for those
                        publishing components.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=issue-part
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=issue-part
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=issue-part
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=issue-part
                                                                   -->
<!ELEMENT  issue-part   (#PCDATA %issue-part-elements;)*             >  


<!--                    ISSUE SPONSOR ELEMENTS                     -->
<!--                    Elements for use in the <issue-sponsor> 
                        element                                    -->
<!ENTITY % issue-sponsor-elements 
                        "%just-rendition;"                           > 


<!--                    ISSUE TITLE                                -->
<!--                    Used to record the sponsor for an issue of 
                        the journal
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=issue-sponsor
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=issue-sponsor
                                                                   -->
<!ELEMENT  issue-sponsor  
                        (#PCDATA %issue-sponsor-elements;)*          >  
<!ATTLIST  issue-sponsor
             %issue-sponsor-atts;                                      >


<!--                    ISSUE TITLE ELEMENTS                       -->
<!--                    Elements for use in the <issue-title> element
                                                                   -->
<!ENTITY % issue-title-elements 
                        "%just-rendition;"                           > 


<!--                    ISSUE TITLE                                -->
<!--                    Used to record the theme or special issue
                        title for an issue of the journal
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=issue-title
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=issue-title
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=issue-title
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=issue-title
                                                                   -->
<!ELEMENT  issue-title  (#PCDATA %issue-title-elements;)*            >  
<!ATTLIST  issue-title
             %issue-title-atts;                                      >


<!--                    JOURNAL IDENTIFIER                         -->
<!--                    Short code that represents the journal; used
                        as an alternative to or short form of the
                        journal title; used for identification of 
                        the journal domain.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=journal-id
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=journal-id
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=journal-id
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=journal-id
                                                                   -->
<!ELEMENT  journal-id   (#PCDATA)                                    >
<!ATTLIST  journal-id
             %journal-id-atts;                                       >


<!--                    ROLE ELEMENTS                              -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <role>                    
                        Design Note: All inline mixes begin with an
                        OR bar; since %rendition-plus; is an 
                        inline mix, the OR bar is already there.   -->  
<!ENTITY % role-elements
                        "%rendition-plus;"                           >


<!--                    ROLE OR FUNCTION TITLE OF CONTRIBUTOR      -->
<!--                    A title or the role of a contributor
                        (such as an author) in this work. For example,
                        Editor-in-Chief, Contributor, Chief
                        Scientist, Photographer, Research Associate,
                        etc.              
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=role
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=role
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=role
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=role
                                                                   -->
<!ELEMENT  role         (#PCDATA %role-elements;)*                   >
<!ATTLIST  role
             %role-atts;                                             >

 
<!--                    TRANSLATED TITLE GROUP MODEL               -->
<!--                    Content model for the element  
                        <trans-title-group>                        -->
<!ENTITY % trans-title-group-model    
                        "(trans-title, trans-subtitle*)"             >


<!--                    TRANSLATED TITLE GROUP                     -->
<!--                    Container element for all translated, and 
                        transliterated journal titles.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=trans-title-group
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=trans-title-group
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=trans-title-group
                                                                   -->
<!ELEMENT  trans-title-group
                        %trans-title-group-model;                    >
<!ATTLIST  trans-title-group
             %trans-title-group-atts;                                >


<!--                    TRANSLATED SUBTITLE                        -->
<!--                    An alternate version of an article subtitle 
                        that has been translated out of the original 
                        language of the article subtitle <subtitle>  
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=trans-subtitle
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=trans-subtitle
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=trans-subtitle
                                                                   -->
<!ELEMENT  trans-subtitle  
                        (#PCDATA %title-elements;)*                  >


<!--                    TRANSLATED TITLE                           -->
<!--                    An alternate version of the title that has
                        been translated into a language other than
                        that of the original article title 
                        <article-title>  
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=trans-title
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=trans-title
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=trans-title
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=trans-title
                                                                   -->
<!ELEMENT  trans-title  (#PCDATA %title-elements;)*                  >
<!ATTLIST  trans-title
            %trans-title-atts;                                       >


<!--                    VOLUME NUMBER ELEMENTS                     -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <volume>                                 -->
<!ENTITY % volume-elements
                        "%just-rendition; "                          >


<!--                    VOLUME NUMBER                              -->
<!--                    NEW DEFINITION FOR RELEASE 2.0:
                        The volume number, volume name, or other 
                        identifier of an volume of a journal that
                        is displayed or printed with the volume. 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=volume
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=volume
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=volume
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=volume
                                                                   -->
<!ELEMENT  volume       (#PCDATA %volume-elements;)*                 >
<!ATTLIST  volume
            %volume-atts;                                            >


<!--                    VOLUME IDENTIFIER ELEMENTS                 -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <volume-id>                              -->
<!ENTITY % volume-id-elements
                        "%just-rendition; "                          >


<!--                    VOLUME IDENTIFIER                          -->
<!--                    Used to record an identifier such as a DOI
                        that describes an entire volume of a 
                        journal.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=volume-id
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=volume-id
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=volume-id
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=volume-id
                                                                   -->
<!ELEMENT  volume-id    (#PCDATA %volume-id-elements;)*              >
<!ATTLIST  volume-id
             %volume-id-atts;                                        >


<!--                    VOLUME SERIES ELEMENTS                     -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <volume>                                 -->
<!ENTITY % volume-series-elements
                        "%just-rendition; "                          >


<!--                    VOLUME SERIES                              -->
<!--                    This is a rare metadata element, intended to 
                        hold the series number, in those odd cases 
                        where, for example, a Publisher has reissued
                        a journal, restarting the volume numbers
                        with "1", so duplicate volume numbers 
                        would exist and need to be differentiated.
                        Such a publisher typically adds a series 
                        series number to their volume numbers, and
                        this element has been created to hold such
                        a series number. 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=volume-series
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=volume-series
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=volume-series
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=volume-series
                                                                   -->
<!ELEMENT  volume-series
                        (#PCDATA %volume-series-elements;)*          >
<!ATTLIST  volume-series
            %volume-series-atts;                                     >


<!-- ============================================================= -->
<!--                    COMMON ARTICLE METADATA/BIBLIOGRAPHIC      -->
<!--                    CONTRIBUTOR IDENTIFICATION ELEMENTS        -->
<!-- ============================================================= -->


<!--                    ANONYMOUS ELEMENTS                         -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        an <anonymous> element                     -->
<!ENTITY % anonymous-elements
                        "%just-rendition;"                           >
 

<!--                    ANONYMOUS CONTENT MODEL                    -->
<!--                    The content model for the <etal> element   -->
<!ENTITY % anonymous-model   
                        "(#PCDATA %anonymous-elements;)*"            > 


<!--                    ANONYMOUS                                  -->
<!--                    Place holder for the name of a contributor
                        whose name is unknown or not disclosed.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=anonymous
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=anonymous
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=anonymous
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=anonymous
                                                                   -->
<!ELEMENT  anonymous    %anonymous-model;                            >  


<!--                    ET AL ELEMENTS                             -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        an <etal> element                          -->
<!ENTITY % etal-elements
                        "%just-rendition;"                           >


<!--                    ET AL CONTENT MODEL                        -->
<!--                    The content model for the <etal> element   -->
<!ENTITY % etal-model   "(#PCDATA %etal-elements;)*"                 > 


<!--                    ET AL                                      -->
<!--                    Most journals model this as an EMPTY element,
                        typically used to generate the text "et al." 
                        from a stylesheet. However, a few journal
                        DTDs (Blackwell's, for example) expect
                        content for this element, with such text as
                        "Associates, coworkers, and colleagues".
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=etal
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=etal
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=etal
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=etal
                                                                   -->
<!ELEMENT  etal         %etal-model;                                 >  


<!-- ============================================================= -->
<!--                    COMMON ARTICLE METADATA/BIBLIOGRAPHIC      -->
<!--                    PUBLISHER IDENTIFICATION ELEMENTS          -->
<!-- ============================================================= -->


<!--                    PUBLISHER CONTENT MODEL                    -->
<!--                    The content model for the <publisher> 
                        element                                    -->
<!ENTITY % publisher-model
                        "(publisher-name, publisher-loc?)"           >


<!--                    PUBLISHER                                  -->
<!--                    Who published the work  
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=publisher
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=publisher
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=publisher
                                                                   -->
<!ELEMENT  publisher    %publisher-model;                            >
<!ATTLIST  publisher
             %publisher-atts;                                        >


<!--                    PUBLISHER'S NAME ELEMENTS                  -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <publisher-name>
                        Design Note: All inline mixes begin with an
                        OR bar; since %just-rendition; is an 
                        inline mix, the OR bar is already there    -->  
<!ENTITY % publisher-name-elements
                        "%just-rendition; "                          >


<!--                    PUBLISHER'S NAME                           -->
<!--                    Name of the publisher of the work
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=publisher-name
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=publisher-name
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=publisher-name
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=publisher-name
                                                                   -->
<!ELEMENT  publisher-name      
                        (#PCDATA %publisher-name-elements;)*         >  


<!--                    PUBLISHER'S LOCATION ELEMENTS              -->
<!--                    Elements for use in the Publisher Location
                        <publisher-loc> element                    -->
<!ENTITY % publisher-loc-elements 
                        "| %address.class; | %address-link.class; |
                         %emphasis.class; | %subsup.class;"          > 


<!--                    PUBLISHER'S LOCATION                       -->
<!--                    Place of publication, usually a city such
                        as New York or London 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=publisher-loc
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=publisher-loc
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=publisher-loc
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=publisher-loc
                                                                   -->
<!ELEMENT  publisher-loc       
                        (#PCDATA %publisher-loc-elements;)*          >


<!-- ============================================================= -->
<!--                    COMMON METADATA ELEMENTS CONTINUED         -->
<!--                    PAGE NUMBERING (SIZE) ELEMENTS             -->
<!-- ============================================================= -->


<!--                    FIRST PAGE                                 -->
<!--                    The page number on which the article starts,
                        for print journals that have page numbers 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=fpage
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=fpage
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=fpage
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=fpage
                                                                   -->
<!ELEMENT  fpage        (#PCDATA)                                    >
<!ATTLIST  fpage
             %fpage-atts;                                            >
             

<!--                    LAST PAGE                                  -->
<!--                    The page number on which the article ends,
                        for print journals that have page numbers 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=lpage
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=lpage
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=lpage
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=lpage
                                                                   -->
<!ELEMENT  lpage        (#PCDATA)                                    >
<!ATTLIST  lpage
             %lpage-atts;                                            >
             

<!--                    PAGE RANGES                                -->
<!--                    A container element for additional page 
                        information (TO BE USED TO SUPPLEMENT AND
                        NOT TO REPLACE <fpage> and <lpage>) to record
                        discontinuous pages ranges such as 
                            "8-11, 14-19, 40"
                        meaning that the article begins on page
                        8, runs 8 through 11, skips to pages 14 
                        through 19, and concludes on page 40.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=page-range
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=page-range
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=page-range
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=page-range
                                                                   -->
<!ELEMENT  page-range   (#PCDATA)                                    >
<!ATTLIST  page-range
             %page-range-atts;                                       >


<!--                    SIZE ELEMENTS                              -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        the size element.                          -->
<!ENTITY % size-elements 
                        ""                                           >


<!--                    SIZE                                       -->
<!--                    The size (such as running time, page count, 
                        or physical measurements) of the object being 
                        described, usually by a <product> element.
                        The "units" attribute must be used to name
                        the unit of measure (pages, minutes, hours,
                        linear feet, etc.).
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=size
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=size
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=size
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=size
                                                                   -->
<!ELEMENT  size         (#PCDATA %size-elements;)*                   >
<!ATTLIST  size
             %size-atts;                                             >


<!--                    ELECTRONIC LOCATION IDENTIFIER             -->
<!--                    Used to identify an article that 
                        does not have traditional page numbers. 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=elocation-id
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=elocation-id
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=elocation-id
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=elocation-id
                                                                   -->
<!ELEMENT  elocation-id (#PCDATA)                                    >
<!ATTLIST  elocation-id 
             %elocation-id-atts;                                     >


<!-- ============================================================= -->
<!--                    CITATIONS (BIBLIOGRAPHIC REFERENCE)        -->
<!-- ============================================================= -->


<!--                    CITATION ELEMENTS                          -->
<!--                    Content for both types of citation. These
                        elements may be mixed with #PCDATA in the 
                        <mixed-citation> element (in which all
                        punctuation and spacing are left intact), and
                        they also constitute the choices that can be 
                        used to form the all-element-content of the
                        <element-citation> element (in which  
                        punctuation and spacing are removed).
                        Design Note: All inline mixes begin with an
                        OR bar.                                    -->
<!ENTITY % citation-elements   
                        "%emphasis.class; | %inline-display.class; |
                         %inline-math.class; | %label.class; | 
                         %phrase.class; | %references.class; |
                         %subsup.class;"                             > 


<!--                    MIXED CITATION                             -->
<!--                    A citation is a description of a work, such
                        as a journal article, book, or personal
                        communication, that is cited in the text of
                        the article. This citation element is 
                        completely loose, with text, punctuation, 
                        spacing, and any of the citation elements
                        in any order.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=mixed-citation
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=mixed-citation
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=mixed-citation
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=mixed-citation
                                                                   -->
<!ELEMENT  mixed-citation     
                        (#PCDATA | %citation-elements;)*             >
<!ATTLIST  mixed-citation
             %citation-atts;                                         >


<!--                    ELEMENT CITATION                           -->
<!--                    A citation is a description of a work, such
                        as a journal article, book, or personal
                        communication, that is cited in the text of
                        the article. This citation model contains
                        element-only content, with elements in 
                        any order as many times as needed. This
                        citation is intended for use in capturing
                        a publisher's specific element order.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=element-citation
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=element-citation
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=element-citation
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=element-citation
                                                                   -->
<!ELEMENT  element-citation
                        (%citation-elements;)+                       >
<!ATTLIST  element-citation
             %citation-atts;                                         >
             

<!-- ============================================================= -->
<!--                    ADDRESS ELEMENTS (BIBLIOGRAPHIC)           -->
<!-- ============================================================= -->


<!--                    ADDRESS MODEL                              -->
<!--                    Content model for the <address> element    -->
<!ENTITY % address-model    
                        "(%address.class; | %address-link.class;)*"  >


<!--                    ADDRESS/CONTACT INFORMATION                -->
<!--                    Wrapper element for contact information such 
                        as address, phone, fax, email, url, country,
                        etc. 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=address
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=address
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=address
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=address
                                                                   -->
<!ELEMENT  address      %address-model;                              >
<!ATTLIST  address
             %address-atts;                                          >


<!--                    ADDRESS LINE ELEMENTS                      -->
<!--                    Elements for use in the <addr-line> element-->
<!ENTITY % addr-line-elements 
                        "%simple-text; | %address-line.class;"       > 


<!--                    ADDRESS LINE                               -->
<!--                    One line in an address                     -->
<!--                    Conversion Note: If the address is 
                        undifferentiated data characters, the entire
                        address may be inside one of these elements.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=addr-line
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=addr-line
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=addr-line
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=addr-line
                                                                   -->
<!ELEMENT  addr-line    (#PCDATA %addr-line-elements;)*              >
<!ATTLIST  addr-line
             %addr-line-atts;                                        >


<!--                    COUNTRY ELEMENTS                           -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        the country element.                       -->
<!ENTITY % country-elements 
                        ""                                           >


<!--                    COUNTRY: IN AN ADDRESS                     -->
<!--                    Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=country
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=country
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=country
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=country
                                                                   -->
<!ELEMENT  country      (#PCDATA %country-elements;)*                >
<!ATTLIST  country
             %country-atts;                                        >


<!--                    EMAIL ADDRESS ELEMENTS                     -->
<!--                    Elements to be mixed with #PCDATA inside the
                        <email> element                            -->
<!ENTITY % email-elements 
                        ""                                           > 


<!--                    EMAIL ADDRESS                              -->
<!--                    Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=email
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=email
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=email
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=email
                                                                   -->
<!ELEMENT  email        (#PCDATA %email-elements;)*                  >
<!ATTLIST  email
             %email-atts;                                            >


<!--                    FAX NUMBER ELEMENTS                        -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <fax>                                    -->
<!ENTITY % fax-elements
                        "%just-rendition; "                          >


<!--                    FAX NUMBER: IN AN ADDRESS                  -->
<!--                    Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=fax
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=fax
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=fax
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=fax
                                                                   -->
<!ELEMENT  fax          (#PCDATA %fax-elements;)*                    >
<!ATTLIST  fax
             %fax-atts;                                              >


<!--                    INSTITUTION NAME ELEMENTS                  -->
<!--                    Elements for use in the <institution> 
                        element                                    -->
<!ENTITY % institution-elements 
                        "| %break.class; | %emphasis.class; |
                         %subsup.class;"                             > 


<!--                    INSTITUTION NAME: IN AN ADDRESS            -->
<!--                    Name of a institution or organization such as
                        a university or corporation used in an
                        address or within a citation (such as a
                        <mixed-citation> or an <element-citation> 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=institution
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=institution
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=institution
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=institution
                                                                   -->
<!ELEMENT  institution  (#PCDATA %institution-elements;)*            >
<!ATTLIST  institution
             %institution-atts;                                      > 


<!--                    PHONE NUMBER ELEMENTS                      -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <phone number> 
                        Design Note: All inline mixes begin with an
                        OR bar, but since %just-rendition; is an 
                        inline mix, the OR bar is already there.   -->
<!ENTITY % phone-elements
                        "%just-rendition;"                           >


<!--                    PHONE NUMBER: IN AN ADDRESS                -->
<!--                    A callable phone number in some telephone or
                        wireless system somewhere in the world.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=phone
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=phone
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=phone
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=phone
                                                                   -->
<!ELEMENT  phone        (#PCDATA %phone-elements;)*                  >
<!ATTLIST  phone
             %phone-atts;                                            > 


<!--                    URI ELEMENTS                               -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <uri>
                        Design Note: This PE begins with an OR
                        bar because %just-rendition; begins with an
                        OR bar.                                    -->
<!ENTITY % uri-elements
                        "%just-rendition;"                           >


<!--                    URI                                        -->
<!--                    URI such as a URL that may be used as a 
                        live link, typically naming a website, such 
                        as:
                           <url>http://www.mulberrytech.com</url>
                        Alternatively the element content may name
                        the URL, e.g., "Mulberry's Website" and the
                        "xlink:href" attribute may hold the real
                        URL.
                           <url xlink:href="http://www.mulberrytech.
                           com">Mulberry's Website</url>           
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=uri
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=uri
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=uri
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=uri
                                                                   -->
<!ELEMENT  uri          (#PCDATA %uri-elements;)*                    >
<!ATTLIST  uri
             %uri-atts;                                              >


<!-- ============================================================= -->
<!--                    DATE ELEMENTS (PUBLICATION HISTORY)        -->
<!-- ============================================================= -->


<!--                    DATE                                       -->
<!--                    The elements <day>, <month>, and <year> should 
                        ALWAYS be numeric values. The date may be 
                        represented as a string in <string-date>, but
                        the numeric values should be present whenever
                        possible.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=date
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=date
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=date
                                                                   -->
<!ELEMENT  date         %date-model;                                 >
<!ATTLIST  date
              %date-atts;                                            >


<!--                    DAY                                        -->
<!--                    The numeric value of a day of the month, used
                        in both article metadata and inside a citation,
                        in two digits as it would be stated in the "DD" 
                        in an international date format YYYY-MM-DD, for
                        example "03", "25". 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=day
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=day
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=day
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=day
                                                                   -->
<!ELEMENT  day          (#PCDATA)                                    >
<!ATTLIST  day 
             %day-atts;                                              >


<!--                    MONTH                                      -->
<!--                    Names one of the months of the year. Used in
                        both article metadata and inside a citation,
                        this element may contain a full month 
                        "December", an abbreviation "Dec", or, 
                        preferably, a numeric month such as "12".
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=month
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=month
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=month
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=month
                                                                   -->
<!ELEMENT  month        (#PCDATA)                                    >
<!ATTLIST  month 
             %day-atts;                                              >


<!--                    SEASON                                     -->
<!--                    Season of publication, such as "Spring". 
                        Used in both article metadata and inside a 
                        citation (such as a <mixed-citation> or an
                        <element-citation>
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=season
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=season
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=season
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=season
                                                                   -->
<!ELEMENT  season       (#PCDATA)                                    >
<!ATTLIST  season 
             %day-atts;                                              >


<!--                    YEAR                                       -->
<!--                    Year of publication, which should be expressed
                        as a 4-digit number: "1776" or "1924"
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=year
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=year
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=year
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=year
                                                                   -->
<!ELEMENT  year         (#PCDATA)                                    >
<!ATTLIST  year 
             %year-atts;                                             >


<!--                    STRING DATE ELEMENTS                       -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        the <string-date> element                  -->
<!ENTITY % string-date-elements 
                        " | %date-parts.class;"                      >


<!--                    DATE AS A STRING                           -->
<!--                    This is a representation of the date as a 
                        string; usually used for dates for which 
                        months and years are not given, but may be
                        used for any date as a string (i.e., "January, 
                        2001" "Fall 2001" "March 11, 2001".
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=string-date
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=string-date
                                                                   -->
<!ELEMENT  string-date  (#PCDATA %string-date-elements;)*            >
<!ATTLIST  string-date 
             %string-date-atts;                                      >


<!-- ============================================================= -->
<!--                    PERSON'S NAME ELEMENTS (BIBLIOGRAPHIC)     -->
<!-- ============================================================= -->


<!--                    STRING NAME ELEMENTS                       -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        the <string-name> element                  -->
<!ENTITY % string-name-elements 
                        " | %person-name.class;"                     >


<!--                    NAME OF PERSON (UNSTRUCTURED)              -->
<!--                    Wrapper element for personal names where the
                        stricter format of the <name> element cannot
                        be followed. This is a very loose element,
                        allowing data characters, generated text,
                        and any or all of the naming elements.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=string-name
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=string-name
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=string-name
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=string-name
                                                                   -->
<!ELEMENT  string-name  (#PCDATA %string-name-elements;)*            >


<!--                    NAME OF PERSON (STRUCTURED)                -->
<!--                    Wrapper element for personal names.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=name
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=name
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=name
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=name
                                                                   -->
<!ELEMENT  name         (surname, given-names?, prefix?, suffix?)    >
<!--         name-style Used for choosing an inversion algorithm or
                        for sorting or other processing functions.  
                        The three values and approximate meanings are:
                        Value     Display          Sort/Inversion
                        western   given family     family given
                        eastern   family given     family given
                        islensk   given patronymic given, patronymic 
                                                                   -->
<!ATTLIST  name
             %name-atts;                                             >


<!--                    SURNAME ELEMENTS                           -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <surname>                                
                        Design Note: This PE begins with an OR
                        bar because %just-rendition; begins with an
                        OR bar.                                    -->
<!ENTITY % surname-elements
                        "%just-rendition; "                          >


<!--                    SURNAME                                    -->  
<!--                    The surname (family name) of an individual.  
                        or the single name if there is only one
                        name, for example, "Cher" or "Pele".
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=surname
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=surname
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=surname
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=surname
                                                                   -->
<!ELEMENT  surname      (#PCDATA %surname-elements;)*                >
<!ATTLIST  surname
             %surname-atts;                                          >


<!--                    GIVEN (FIRST) NAMES ELEMENTS               -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <given-names>                            -->
<!ENTITY % given-names-elements
                        "%just-rendition;"                           >


<!--                    GIVEN (FIRST) NAMES                        -->
<!--                    Includes all given names for a person, such 
                        as the first name, middle names, maiden 
                        name if used as part of the married name, 
                        etc.) 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=given-names
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=given-names
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=given-names
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=given-names
                                                                   -->
<!ELEMENT  given-names  (#PCDATA %given-names-elements;)*            >
<!ATTLIST  given-names
             %given-names-atts;                                      >


<!--                    PREFIX ELEMENTS                            -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <prefix>  
                        Design Note: This PE begins with an OR
                        bar because %just-rendition; begins with an
                        OR bar.                                    -->
<!ENTITY % prefix-elements
                        "%just-rendition;"                           >


<!--                    PREFIX                                     -->
<!--                    Honorifics or other qualifiers that usually 
                        precede the surname, for example,  Professor, 
                        Rev., President, Senator, Dr., Sir, The 
                        Honorable, et al.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=prefix
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=prefix
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=prefix
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=prefix
                                                                   -->
<!ELEMENT  prefix       (#PCDATA %prefix-elements;)*                 >



<!--                    SUFFIX ELEMENTS                            -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <suffix>
                        Design Note: This PE begins with an OR bar,
                        it is inside %just-rendition;              -->
<!ENTITY % suffix-elements
                        "%just-rendition;"                           >


<!--                    SUFFIX                                     -->
<!--                    Text used as a suffix to a person's name, for
                        example: Sr. Jr. III, 3rd  
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=suffix
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=suffix
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=suffix
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=suffix
                                                                   -->
<!ELEMENT  suffix       (#PCDATA %suffix-elements;)*                 >
<!ATTLIST  suffix
             %suffix-atts;                                           >


<!-- ============================================================= -->
<!--                    EXTERNAL LINK ELEMENTS                     -->
<!-- ============================================================= -->


<!--                    EXTERNAL LINK ELEMENTS                     -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        an <ext-link>  
                        Design Note: All inline mixes begin with an
                        OR bar, but since %link-elements; is an inline
                        mix, the OR bar is already there.          -->
<!ENTITY % ext-link-elements
                        "%link-elements;"                            >


<!--                    EXTERNAL LINK                              -->
<!--                    Link to an external file, such as Medline, 
                        Genbank, etc.  Linking may be accomplished
                        using the XLink linking attributes.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=ext-link
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=ext-link
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=ext-link
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=ext-link
                                                                   -->
<!ELEMENT  ext-link     (#PCDATA %ext-link-elements;)*               >
<!ATTLIST  ext-link
             %ext-link-atts;                                         >


<!-- ============================================================= -->
<!--                    SHARED STRUCTURAL ELEMENTS                 -->
<!-- ============================================================= -->


<!--                    ATTRIBUTION ELEMENTS                       -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        an attribution                          
                        Design Note: All inline mixes begin with an
                        OR bar, but since %simple-phrase; is an 
                        inline mix, the OR bar is already there.   -->
<!ENTITY % attrib-elements
                        "%emphasized-text;"                          >
             

<!--                    ATTRIBUTION                                -->
<!--                    Source, author, formal thanks, or other 
                        information (other than copyright material)
                        concerning the origins of an extract, a poem
                        <verse-group> or similar element.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=attrib
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=attrib
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=attrib
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=attrib
                                                                   -->
<!ELEMENT  attrib       (#PCDATA %attrib-elements;)*                 >
<!ATTLIST  attrib
             %attrib-atts;                                           >


<!--                    DEFINITION LIST: DEFINITION MODEL          -->
<!--                    Content model for the <def> element, which
                        is used in contexts outside of <def-list>s -->
<!ENTITY % def-model    "((%just-para.class;)+ )"                    > 

  
<!--                    DEFINITION LIST: DEFINITION                -->
<!--                    Used in two senses:
                        1) The definition, description, or other
                        explanation of the word, phrase, or picture
                        of a 2-part or definition list
                        2) The definition or expansion of an
                        abbreviation or acronym <abbrev>
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=def
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=def
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=def
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=def
                                                                   -->
<!ELEMENT  def          %def-model;                                  >
<!ATTLIST  def                                
             %def-atts;                                              >


<!--                    LABEL ELEMENTS                             -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        the <label> element                        -->
<!ENTITY % label-elements 
                        "| %emphasis.class; | %inline-display.class; | 
                         %inline-math.class; | %subsup.class;"       >


<!--                    LABEL OF A FIGURE, REFERENCE, ETC.         -->
<!--                    The number and any prefix word that comes
                        before, for example, the caption of a Figure,
                        such as "Figure 3." or "Exhibit 2.". 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=label
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=label
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=label
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=label
                                                                   -->
<!ELEMENT  label        (#PCDATA %label-elements;)*                  >


<!--                    PRICE ELEMENTS                             -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        the <price> element                        -->
<!ENTITY % price-elements 
                        "| %emphasis.class;"                         >


<!--                    PRICE                                      -->
<!--                    Sale price of a work, typically a book or
                        software package that is being reviewed
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=price
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=price
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=price
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=price
                                                                   -->
<!ELEMENT  price        (#PCDATA %price-elements;)*                  >
<!--         currency   In what currency is this price presented?
                        Best Practice is to use the ISO 4117 "currency 
                        code" 3-letter values:
                          USD  United States Dollar
                          CAD  Canadian Dollar
                          EUR  European Union Euro
                          RUB  Russian Ruble
                        These codes are defined by ISO in ISO 4217
                        and listed at:
http://www.iso.org/iso/en/prods-services/popstds/currencycodeslist.html#SZ.
                                                                   -->
<!ATTLIST  price
             %price-atts;                                            >


<!--                    STRUCTURAL TITLE ELEMENTS                  -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        the <title> element  
                        Design Note: All inline mixes begin with an
                        OR bar, but since %simple-phrase; is an 
                        inline mix, the OR bar is already there.   -->
<!ENTITY % struct-title-elements 
                        "%simple-phrase; | %break.class; |
                         %citation.class;"                           > 


<!--                    TITLE                                      -->
<!--                    Heading or title for a structural element
                        such as a Section, Figure, Boxed Text, etc.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=title
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=title
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=title
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=title
                                                                   -->
<!ELEMENT  title        (#PCDATA %struct-title-elements;)*           >
<!ATTLIST  title
             %title-atts;                                            >


<!-- ============================================================= -->
<!--                    RELATED ARTICLE ELEMENTS                   -->
<!--                    (METADATA AND STRUCTURAL)                  -->
<!-- ============================================================= -->


<!--                    RELATED ARTICLE ELEMENTS                   -->
<!--                    Elements allowed inside <related-article>  -->
<!ENTITY % related-article-elements 
                        "| %emphasis.class; | %journal-id.class; |
                         %phrase-content.class; | 
                         %references.class; |  %subsup.class;"       >


<!--                    RELATED ARTICLE INFORMATION                -->
<!--                    Wrapper element, used as a container for 
                        text links to a related article, possibly 
                        accompanied by a very brief description
                        such as "errata (correction)".
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=related-article
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=related-article
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=related-article
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=related-article
                                                                   -->
<!ELEMENT  related-article
                        (#PCDATA %related-article-elements;)*        >
<!ATTLIST  related-article
             %related-article-atts;                                  >


<!-- ============================================================= -->
<!--                    SIGNATURE BLOCK ELEMENTS                   -->
<!-- ============================================================= -->


<!--                    SIGNATURE BLOCK ELEMENTS                   -->
<!--                    Elements to be mixed with data characters
                        inside the content model for the 
                        <sig-block> element.                       -->
<!ENTITY % sig-block-elements 
                         "| %break.class; | %emphasis.class; |   
                          %just-base-display.class; |
                          %inline-display-noalt.class; |
                          %phrase-content.class; | 
                          %sig.class; | %subsup.class;"              > 


<!--                    SIGNATURE BLOCK                            -->
<!--                    An area of text and graphic material placed
                        at the end of an article or section to hold
                        the graphical signature or other description
                        of the person responsible for or attesting
                        to the content. 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=sig-block
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=sig-block
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=sig-block
                                                                   -->
<!ELEMENT  sig-block    (#PCDATA %sig-block-elements;)*              >
<!ATTLIST  sig-block
             %sig-block-atts;                                        >


<!--                    SIGNATURE ELEMENTS                         -->
<!--                    Elements to be mixed with data characters
                        inside the content model for the 
                        <sig> element.                             -->
<!ENTITY % sig-elements "%rendition-plus; | %break.class; | 
                         %inline-display-noalt.class; | 
                         %just-base-display-noalt.class;"            >


<!--                    SIGNATURE                                  -->
<!--                    One contributor signature and associated 
                        material (such as a text restatement of the
                        affiliation) inside a signature block. 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=sig
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=sig
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=sig
                                                                   -->
<!ELEMENT  sig          (#PCDATA %sig-elements;)*                    >
<!ATTLIST  sig
             %sig-atts;                                              >


<!-- ============================================================= -->
<!--                    FRONT MATTER/BACK MATTER ELEMENTS          -->
<!-- ============================================================= -->


<!--                    ACKNOWLEDGMENTS MODEL                      -->
<!--                    Content model for the <ack> element        -->
<!ENTITY % ack-model    "%sec-opt-title-model;"                      > 


<!--                    ACKNOWLEDGMENTS                            -->
<!--                    Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=ack
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=ack
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=ack
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=ack
                                                                   -->

<!ELEMENT  ack          %ack-model;                                  >
<!ATTLIST  ack                                
             %ack-atts;                                              >


<!--                    BIOGRAPHY MODEL                            -->
<!--                    Content model for the <bio> element        -->
<!ENTITY % bio-model    "%sec-opt-title-model;"                      > 
                   

<!--                    BIOGRAPHY                                  -->
<!--                    Short biography of a person, usually the
                        author                                     
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=bio
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=bio
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=bio
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=bio
                                                                   -->
<!ELEMENT  bio          %bio-model;                                  >      
<!ATTLIST  bio
             %bio-atts;                                              >


<!--                    NOTES MODEL                                -->
<!--                    Content model for the <notes> element      -->
<!ENTITY % notes-model  "%sec-opt-title-model;"                      > 
             

<!--                    NOTES                                      -->
<!--                    A container element for the notes that may
                        appear at the end of an Article or at the 
                        end of a Table,for example, a typical
                        end-of-article note is a "Note in Proof". 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=notes
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=notes
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=notes
                                                                   -->
<!ELEMENT  notes        %notes-model;                                >      
<!ATTLIST  notes
             %notes-atts;                                            >


<!-- ============================================================= -->
<!--                    ACCESSIBILITY ELEMENTS                     -->
<!-- ============================================================= -->


<!--                    ALTERNATE TITLE TEXT FOR A FIGURE, ETC.    -->
<!--                    Short phrase used to display or pronounce 
                        as an alternative to providing the full
                        graphic for accessibility display or 
                        graphic-limited websites or devices. For 
                        example, <alt-text> may be used to display 
                        "behind" a figure or graphic.   
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=alt-text
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=alt-text
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=alt-text
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=alt-text
                                                                   -->
<!ELEMENT  alt-text     (#PCDATA)                                    >
<!ATTLIST  alt-text
             %alt-text-atts;                                         > 


<!--                    LONG DESCRIPTION ELEMENTS                  -->
<!--                    Elements to be mixed with data characters
                        inside the <long-desc> element             -->
<!ENTITY % long-desc-elements
                        ""                                           >


<!--                    LONG DESCRIPTION                           -->
<!--                    Description or summary of the content of a 
                        graphical object, table, or textual object
                        such as a text box, used by some systems to
                        make the object accessible, even to people
                        or systems that cannot read/see/display the
                        object.                                  
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=long-desc
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=long-desc
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=long-desc
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=long-desc
                                                                   -->
<!ELEMENT  long-desc    (#PCDATA %long-desc-elements;)*              >
<!ATTLIST  long-desc
             %long-desc-atts;                                        >


<!-- ============================================================= -->
<!--                    CUSTOM METADATA ELEMENTS                   -->
<!-- ============================================================= -->


<!--                    CUSTOM METADATA GROUP MODEL                -->
<!--                    Content model for the <custom-meta-group> 
                        element                                    -->
<!ENTITY % custom-meta-group-model
                        "(custom-meta+)"                             > 


<!--                    CUSTOM METADATA GROUP                      -->
<!--                    Some DTDs and schemas allow for metadata
                        above and beyond that which can be specified
                        by this DTD. This element is a grouping  
                        element used to contain all these additional
                        metadata elements.   
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=custom-meta-group
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=custom-meta-group
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=custom-meta-group
                                                                   -->
<!ELEMENT  custom-meta-group
                        %custom-meta-group-model;                    >


<!--                    CUSTOM METADATA MODEL                      -->
<!--                    Content model for the <custom-meta> element-->
<!ENTITY % custom-meta-model
                        "(meta-name, meta-value)"                    > 


<!--                    CUSTOM METADATA                            -->
<!--                    Some DTDs and schemas allow for metadata
                        above and beyond that which can be specified
                        by this DTD. This element is used to capture
                        metadata elements that have not been defined
                        explicitly in the models for this DTD, so 
                        that the intellectual content will not be lost.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=custom-meta
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=custom-meta
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=custom-meta
                                                                   -->
<!ELEMENT  custom-meta  %custom-meta-model;                          >
<!ATTLIST  custom-meta
             %custom-meta-atts;                                      >


<!--                    METADATA DATA NAME ELEMENTS                -->
<!--                    Elements that may be used, along with data
                        characters, inside the <meta-name> element 
                        Design Note: All inline mixes begin with an
                        OR bar, but since %simple-phrase; is an 
                        inline mix, the OR bar is already there.   -->
<!ENTITY % meta-name-elements
                        ""                                           > 


<!--                    METADATA DATA NAME FOR CUSTOM METADATA     -->
<!--                    The <custom-meta> element
                        allows for an infinite number of name/value
                        pairs, with few constraints on the length or
                        content of the value. This element contains
                        the name of the metadata field.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=meta-name
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=meta-name
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=meta-name
                                                                   -->
<!ELEMENT  meta-name    (#PCDATA %meta-name-elements;)*              >


<!--                    METADATA DATA VALUE ELEMENTS               -->
<!--                    Elements that may be used, along with data
                        characters, inside the <meta-value> element 
                        Design Note: All inline mixes begin with an
                        OR bar, but since %simple-phrase; is an 
                        inline mix, the OR bar is already there.   -->
<!ENTITY % meta-value-elements
                        "%simple-phrase;"                            > 
   

<!--                    METADATA DATA VALUE FOR CUSTOM METADATA    -->
<!--                    The <custom-meta> element
                        allows for an infinite number of name/value
                        pairs, with few constraints on the length or
                        content of the value. This element contains
                        the value of the metadata field that is named
                        by the <meta-name> element.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=meta-value
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=meta-value
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=meta-value
                                                                   -->
<!ELEMENT  meta-value   (#PCDATA %meta-value-elements;)*             >


<!-- ============================================================= -->
<!--                    PROCESSING ALTERNATIVES ELEMENTS           -->
<!-- ============================================================= -->


<!--                    ALTERNATIVES MODEL                         -->
<!--                    Model for the <alternatives> processing
                        alternatives element                       --> 
<!ENTITY % alternatives-model

                        "(%alternatives-display.class; | 
                          %math.class;)+"                            >


<!--                    ALTERNATIVES FOR PROCESSING                -->
<!--                    Container element used to hold a group of
                        processing alternatives, for example, a
                        single logical <graphic> that ships in 
                        different formats (tif, gif, jpeg) or
                        different resolutions. This element is a 
                        physical grouping to contain multiple 
                        logically equivalent (substitutable) versions 
                        of the same information object. 
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=alternatives
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=alternatives
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=alternatives
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=alternatives
                                                                   -->
<!ELEMENT  alternatives %alternatives-model;                         >


<!--                    TEXTUAL FORM ELEMENTS                      -->
<!--                    Model for the <textual-form> element       --> 
<!ENTITY % textual-form-elements
                        "%emphasis.class; | 
                         %inline-display-noalt.class; |
                         %math.class; | 
                         %phrase-content.class; | %subsup.class;"    >


<!--                    TEXTUAL FORM                               -->
<!--                    Container element (for use only inside
                        <alternatives>) that will hold text and
                        mixed content objects that act as alternatives
                        to, for example, graphics.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=textual-form
                        http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=textual-form
                        http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=textual-form
                        http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=textual-form
                                                                   -->
<!ELEMENT  textual-form (#PCDATA | %textual-form-elements;)*         >


<!-- ============================================================= -->
<!--                    GENERATED TEXT OR PUNCTUATION              -->
<!-- ============================================================= -->


<!--                   X TEXT ATTRIBUTES                           -->
<!--                   Attributes for the element <x>              -->
<!ENTITY % x-atts
            "content-type
                       CDATA                               #IMPLIED 
             xml:space (default | preserve)      #FIXED 'preserve'"  > 


<!--                    X ELEMENTS                                 -->
<!--                    Elements for use inside the <x> element    -->
<!ENTITY % x-elements   ""                                           > 


<!--                    X - GENERATED TEXT AND PUNCTUATION         -->
<!--                    A container element to hold punctuation or
                        other generated text, typically when 1) an
                        archive decides not to have any text
                        generated and thus to pre-generate such 
                        things as commas or semicolons between 
                        keywords or 2) when an archive receives text
                        with <x> tags embedded and wishes to retain
                        them.
                        Details at: 
                        http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=x
                                                                   -->
<!ELEMENT  x            (#PCDATA %x-elements;)*                      >
<!ATTLIST  x
             %x-atts;                                                >


<!-- ================== End Common (Shared) Elements Module ====== -->
     
