Recurrence rates for neural tube defects and vitamin supplementation.
D000757:Anencephaly / Q000517:prevention & control; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D009436:Neural Tube Defects / Q000235:genetics* / Q000517:prevention & control*; D011247:Pregnancy; D016136:Spina Bifida Occulta / Q000517:prevention & control; D014815:Vitamins / Q000627:therapeutic use*
D014815:Vitamins