has part information content entity CRID centrally registered identifier Alan, IAO call 20101124: potentially the CRID denotes the instance it was associated with during creation. Centrally Registered IDentifier (CRID) An information content entity that consists of a CRID symbol and additional information about which CRID registry it belongs. Entries in a Column of which the header is "Pubmed ID" Note, IAO call 20101124: URIs are not always CRID, as not centrally registered. We acknowledge that CRID is a subset of a larger identifier class, but this subset fulfills our current needs. OBI PURLs are CRID as they are registered with OCLC. UPCs (Universal Product Codes from AC Nielsen)are not CRID as they are not centrally registered. Original proposal from Bjoern, discussions at IAO calls PERSON: Alan Ruttenberg PERSON: Bill Hogan PERSON: Bjoern Peters PERSON: Melanie Courtot PMID:12345 The following URL: "http://www.ncbi.nlm.nih.gov/pubmed/19918065" The following sentence contains a CRID: "The article with Pubmed ID: 19918065". centrally registered identifier