The date on which the work that is cited was examined.
Some online resources are changing so quickly that a citation (<citation> or <nlm-citation>) to the resource is not complete without the date on which the cited resource was examined, because a day before or a day later, the relevant material might be different.
For extensive examples of formatted <nlm-citation>s including use of <access-date>s in <nlm-citation>s, see: Sample PubMed Central Citations. To see tagged versions of these examples, see: Sample PubMed Central Citations - XML Tagged.
Text, numbers, or special characters.
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname>Lawrence</surname>
<given-names>Ruth A</given-names>
</name>
</person-group>
<source>A review of the medical benefits and contraindications
to breastfeeding in the United States [Internet]</source>
<year>1997</year>
<month>10</month>
<access-date>cited 2000 Apr 24</access-date>
<publisher-loc>Arlington (VA)</publisher-loc>
<publisher-name>National Center for Education in Maternal
and Child Health</publisher-name>
<fpage>40</fpage>
<comment>Available from:
<ext-link ext-link-type="url" xlink:href="www.ncemch.org/pubs/PDFs/
breastfeedingTIB.pdf">http://www.ncemch.org/pubs/PDFs/
breastfeedingTIB.pdf</ext-link>
</comment>
</nlm-citation>
references.ent