Veterans Health Administration National Drug File	Cancer Care: Treatment Outcome Ontology	Source
http://purl.bioontology.org/ontology/STY/T051	http://purl.obolibrary.org/obo/CCTO_000072	LOOM
http://purl.bioontology.org/ontology/VANDF/4031615	http://purl.obolibrary.org/obo/CCTO_001046	LOOM