PLOS Thesaurus Disease Drivers Ontology Source
http://purl.obolibrary.org/obo/ExO_0000014 http://localhost/plosthes.2017-1#7029 LOOM
http://purl.obolibrary.org/obo/NCIT_C163032 http://localhost/plosthes.2017-1#4074 LOOM