<pub-date-not-available>
Publication Date Not Available Flag
An empty element which signals that the publication date (<pub-date>) is not available. This does not mean the article is unpublished, merely that the publication date cannot be supplied.
Content Model
<!ELEMENT pub-date-not-available
%pub-date-not-available-model; >Expanded Content Model
EMPTY
Description
This is an EMPTY element
This element may be contained in:
Example
...
<article-meta>
<article-id pub-id-type="pmid">...</article-id>
<title-group>...</title-group>
<pub-date-not-available/>
<permissions>...</permissions>
...
</article-meta>
...