RxNORM	Clinical Trials Ontology	Source
http://purl.bioontology.org/ontology/STY/T071	http://purl.obolibrary.org/obo/BFO_0000001	LOOM
http://purl.bioontology.org/ontology/STY/T092	http://purl.obolibrary.org/obo/OBI_0000245	LOOM
http://purl.bioontology.org/ontology/STY/T074	http://purl.obolibrary.org/obo/ERO_0001092	LOOM