URL ONTOLOGY	Mapping of Epilepsy Ontologies	Source
http://www.case.edu/EpSO.owl#Head	https://bioportal.bioontology.org/ontologies/URL/#HEAD	LOOM
http://www.semanticweb.org/rjyy/ontologies/2015/5/ESSO#Head	https://bioportal.bioontology.org/ontologies/URL/#HEAD	LOOM