has_specified_input has_specified_output has participant information content entity centrally registered identifier symbol centrally registered identifier registry looking up a centrally registered identifier A planned process in which a request to a CRID registry is made to return the information associated with a CRID symbol Going to the PubMed website and entering a PubMed ID in order to retrieve the Pubmed information associated with that ID. PERSON: Alan Ruttenberg PERSON: Bill Hogan PERSON: Bjoern Peters PERSON: Melanie Courtot looking up a CRID planned process metadata complete