ACOG practice bulletin. Clinical management guidelines for obstetrician-gynecologists. Number 44, July 2003. (Replaces Committee Opinion Number 252, March 2001).
D005260:Female; D005492:Folic Acid / Q000008:administration & dosage*; D005500:Follow-Up Studies; D006176:Gynecology / Q000592:standards*; D006801:Humans; D009436:Neural Tube Defects / Q000175:diagnosis / Q000188:drug therapy / Q000517:prevention & control*; D009774:Obstetrics / Q000592:standards*; D011247:Pregnancy; D011295:Prenatal Care / Q000379:methods; D011296:Prenatal Diagnosis / Q000379:methods*; D018570:Risk Assessment; D012955:Societies, Medical
D005492:Folic Acid