title: The genetics of the major central nervous system malformations, based on the South Wales socio-genetic investigation.
mesh_terms: D000757:Anencephaly / Q000235:genetics*; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D016135:Spinal Dysraphism / Q000235:genetics*; D014852:Wales