{% for subject in subjects %}
    <li><a href="{% url 'repository_list_subject' subject.pk %}">{{ subject }} ({{ subject.published_preprints_count }})</a></li>
    {% if subject.children.count > 0 %}
        <ul class="nested tree">
            {% include "common/repository/subject_tree.html" with subjects=subject.children.all %}
        </ul>
    {% endif %}
{% endfor %}