Obstetric and Neonatal Ontology	Randomized Controlled Trials Ontology	Source
http://purl.obolibrary.org/obo/PATO_0000161	http://www.owl-ontologies.com/RCTOntology.owl#Rate	LOOM
http://purl.obolibrary.org/obo/OBI_0000181	http://www.owl-ontologies.com/RCTOntology.owl#Population	LOOM