RxNORM	GoMapMan	Source
http://purl.obolibrary.org/obo/GMM_27	http://purl.bioontology.org/ontology/RXNORM/9394	LOOM
http://purl.obolibrary.org/obo/GMM_31	http://purl.bioontology.org/ontology/STY/T025	LOOM