Short code or abbreviation used as an identifier for a journal.
Remarks
There may be more than one such identifier, with the type of identifier named by the @journal-id-type attribute. For example, one identifier may be a registered DOI, another a control number assigned by the publisher, and another
the journal abbreviation assigned by PubMed Central.
Best Practice: This element should not be confused with
or used for the <issn> or <isbn>
information, which are individual elements in this Tag Set.
Related Elements
Remember that <issn>,
<isbn>,
and <issn-l> are separate concepts and should not be confused.