The Drug Ontology	WHO COVID-19 Rapid Version CRF semantic data model	Source
http://purl.obolibrary.org/obo/BFO_0000001	http://purl.obolibrary.org/obo/BFO_0000001	SAME_URI
http://purl.obolibrary.org/obo/IAO_0000009	http://purl.obolibrary.org/obo/IAO_0000009	SAME_URI
http://purl.obolibrary.org/obo/IAO_0000027	http://purl.obolibrary.org/obo/IAO_0000027	SAME_URI
http://purl.obolibrary.org/obo/UO_0000002	http://purl.obolibrary.org/obo/UO_0000002	SAME_URI
http://purl.obolibrary.org/obo/UO_0000001	http://purl.obolibrary.org/obo/UO_0000001	SAME_URI
http://purl.obolibrary.org/obo/IAO_0000030	http://purl.obolibrary.org/obo/IAO_0000030	SAME_URI
http://purl.obolibrary.org/obo/BFO_0000030	http://purl.obolibrary.org/obo/BFO_0000030	SAME_URI
http://purl.obolibrary.org/obo/IAO_0000003	http://purl.obolibrary.org/obo/IAO_0000003	SAME_URI
http://purl.org/vodan/whocovid19crfsemdatamodel/Corticosteroid	http://purl.obolibrary.org/obo/CHEBI_50858	LOOM
http://purl.org/vodan/whocovid19crfsemdatamodel/Antifungal_agent	http://purl.obolibrary.org/obo/CHEBI_35718	LOOM
http://purl.obolibrary.org/obo/NCIT_C257	http://purl.obolibrary.org/obo/CHEBI_35475	LOOM