Pathway Terminology System	RxNORM	Source
http://purl.bioontology.org/ontology/STY/T051	http://purl.obolibrary.org/obo/IEV_0000000	LOOM
http://purl.bioontology.org/ontology/STY/T053	http://purl.obolibrary.org/obo/IEV_0000106	LOOM