Neural tube defects
http://purl.bioontology.org/ontology/OMIM/MTHU048953
C0027794
http://purl.bioontology.org/ontology/OMIM/236100
http://purl.bioontology.org/ontology/OMIM/609637
MTHU048953
T019
http://purl.bioontology.org/ontology/OMIM/MTHU000058