ns and 8 variables:
</p>

<dl>
<dt>PMID</dt><dd><p>PubMed Identifier (numeric).</p>
</dd>
<dt>Year</dt><dd><p>Publication year of the article (numeric).</p>
</dd>
<dt>Title</dt><dd><p>Title of the PubMed article (character).</p>
</dd>
<dt>Abstract</dt><dd><p>Abstract of the article (character).</p>
</dd>
<dt>Language</dt><dd><p>Language of the article (character).</p>
</dd>
<dt>Type</dt><dd><p>Type of publication, e.g., review, study (character).</p>
</dd>
<dt>Topic</dt><dd><p>Research topic related to panc