Folate prophylaxis in pregnancy.
D001294:Attitude to Health; D000013:Congenital Abnormalities / Q000517:prevention & control*; D003625:Data Collection; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage*; D006266:Health Education; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D011247:Pregnancy
D005492:Folic Acid