The year of a copyright of the article
Since the <copyright-statement> element is intended for display, this element’s contents may not be displayed (but will be available for searching). The <copyright-year> element need not be used, if having the year as part of the Copyright Statement (see <copyright-statement>) is sufficient.
Best practice is to use the <copyright-statement> and <copyright-year> elements only within the container element <permissions>. The <copyright-statement> and <copyright-year> elements are allowed outside the permissions wrapper only for reasons of backwards compatibility.
<!ELEMENT copyright-year
(#PCDATA) >Text, numbers, or special characters
...
<article-meta>
<article-id pub-id-type="pmid">...</article-id>
<title-group>...</title-group>
<contrib-group>...</contrib-group>
<aff id="StLukes">...</aff>
<pub-date pub-type="pub">
<day>27</day><month>03</month>
<year>1999</year>
</pub-date>
<volume>318</volume>
<issue>7187</issue>
<fpage>837</fpage>
<lpage>841</lpage>
<history>
<date date-type="accepted">
<day>29</day>
<month>01</month>
<year>1999</year></date>
</history>
<permissions>
<copyright-statement>Copyright © 1999, British
Medical Journal</copyright-statement>
<copyright-year>1999</copyright-year>
<copyright-holder>British Medical Journal</copyright-holder>
</permissions>
<abstract>
<p>To examine the effectiveness of
day hospital attendance in prolonging independent living for elderly
people.</p>
</abstract>
</article-meta>
...
common.ent