Names the authority (such as Crossref, GenBank, or PDB) that assigned the identifier
or
is responsible for the identifier.
In elements <award-id>, <compound-kwd>, <compound-subject>, <contrib-id>, <custom-meta>, <ext-link>, <extended-by>, <institution-id>, <issue-id>, <journal-id>, <kwd>, <kwd-group>, <nested-kwd>, <object-id>, <pub-date>, <pub-id>, <restricted-by>, <role>, <subj-group>, <subject>, <uri>, and <volume-id>, this attribute may be used if the element is used.
Value
Meaning
Text, numbers, or special characters
The name of the organization assigning the identifier.