http://purl.obolibrary.org/obo/IAO_0000116 informing-subject-of-study-arm are defined in order
vocabulary.dcterms:description both terms that are common to all biomedical @en
rdfs:label informing investigator of subject study arm
http://purl.obolibrary.org/obo/IAO_0000111 informing investigator of subject study arm