Pathway Ontology	Human Disease Ontology 123	Source
http://purl.obolibrary.org/obo/PW_0002506	http://purl.obolibrary.org/obo/DOID_0111585	LOOM
http://purl.obolibrary.org/obo/PW_0000268	http://purl.obolibrary.org/obo/DOID_648	LOOM