This is an element from older versions of this Tag Set (now replaced by the <date-in-citation> element using a @content-type attribute of “access-date”) that records the date on which the cited work was examined.
This element is an artifact, now used only within the <nlm-citation> element, which is deprecated in and after Version 3.0. Use of this element is therefore also deprecated.
Some online resources are changing so quickly that a citation to the resource is not complete without the date on which the cited resource was examined, since a day before or a day later, the relevant material might be different. The <date-in-citation> element is now used to record such information inside <mixed-citation> and <element-citation>s.
<!ELEMENT access-date (#PCDATA %access-date-elements;)* >
Text, numbers, or special characters, zero or more
Used only in <nlm-citation>, an element-style bibliographic reference (punctuation and spacing removed):
... <ref> <nlm-citation publication-format="web"> <source>Hypertension, Dialysis & Clinical Nephrology [Internet]</source> <year>c1995-2001</year> <access-date>cited 2001 Mar 8</access-date> <publisher-loc>Hinsdale (IL)</publisher-loc> <publisher-name>Medtext, Inc.</publisher-name> <comment>Available from: <ext-link ext-link-type="url" xlink:href="www.medtext.com/hdcn.htm"> http://www.medtext.com/hdcn.htm</ext-link></comment> </nlm-citation> </ref> ...