Head and Neck Cancer - Clinical and Gene Ontology	Vertebrate Homologous Organ Group Ontology	Source
http://ontology.lst.tfo.upm.es/BD2D/ctn#Tumor_Region@@3	http://purl.obolibrary.org/obo/VHOG_0000445	LOOM
http://ontology.lst.tfo.upm.es/BD2D/ctn#Tumor_Region@@1	http://purl.obolibrary.org/obo/VHOG_0000188	LOOM