Neural tube defects in New South Wales, Australia.
D001315:Australia; D001722:Birth Order; D005260:Female; D006801:Humans; D008297:Male; D008423:Maternal Age; D009436:Neural Tube Defects / Q000453:epidemiology* / Q000235:genetics; D010331:Paternal Age; D012189:Retrospective Studies; D012306:Risk; D012737:Sex Factors