The identifier of a publication, such as a related journal article, that is listed within a <citation> or <nlm-citation> inside an article’s <ref-list>
The pub-id-type attribute is used either to identify the type of identifier, or to name the authority, organization, or system that defined this identifier, for example identifying a DOI, Medline identifier, PII, the publisher’s identifier, etc. (See pub-id-type for values.)
For extensive examples of formatted <nlm-citation>s including use of <pub-id>s in <nlm-citation>s, see: Sample PubMed Central Citations. To see tagged versions of these examples, see: Sample PubMed Central Citations - XML Tagged.
<!ELEMENT pub-id (#PCDATA) >
Text, numbers, or special characters
<citation> Citation; <nlm-citation> NLM Citation Model; <product> Product Information; <related-article> Related Article Information
In a bibliographic reference (punctuation and spacing removed):
<article>
<front>...</front>
<body>...</body>
<back>
...
<ref-list>
...
<ref id="B8">
<citation>
<person-group person-group-type="author">
<name><surname>Weissert</surname>
<given-names>W</given-names></name>
<name><surname>Wan</surname>
<given-names>T</given-names></name>
<name><surname>Livieratos</surname>
<given-names>B</given-names></name>
<name><surname>Katz</surname>
<given-names>S</given-names></name>
</person-group>
<article-title>Effects and costs of day-care services
for the chronically ill: a randomized
experiment</article-title>
<source>Medical Care</source>
<year>1980</year>
<volume>18</volume>
<fpage>567</fpage>
<lpage>584</lpage>
<pub-id pub-id-type="pmid">6772889</pub-id>
</citation>
</ref>
...
</ref-list>
</back>
</article>
In a bibliographic reference (punctuation and spacing preserved):
<article>
<front>...</front>
<body>...</body>
<back>
...
<ref-list>
...
<ref id="B8">
<citation>
<name><surname>Weissert</surname>
<given-names>W</given-names></name>,
<name><surname>Wan</surname>
<given-names>T</given-names></name>,
<name><surname>Livieratos</surname>
<given-names>B</given-names></name>,
<name><surname>Katz</surname>
<given-names>S</given-names></name>.
<article-title>Effects and costs of day-care services
for the chronically ill: a randomized
experiment</article-title>.
<source>Medical Care</source>
<year>1980</year>;
<volume>18</volume>:
<fpage>567</fpage>–
<lpage>584</lpage>.
<pub-id pub-id-type="pmid">6772889</pub-id>.
</citation>
</ref>
...
</ref-list>
</back>
</article>
references.ent