title: Does sacral agenesis predispose to spina bifida?
mesh_terms: D001848:Bone Diseases, Developmental / Q000235:genetics*; D005260:Female; D006801:Humans; D008297:Male; D009436:Neural Tube Defects / Q000235:genetics; D012447:Sacrum / Q000002:abnormalities*; D016136:Spina Bifida Occulta / Q000235:genetics*