title: Possible prevention of neural-tube defects by periconceptional vitamin supplementation.
mesh_terms: D004739:England; D005260:Female; D006801:Humans; D009436:Neural Tube Defects / Q000517:prevention & control*; D009660:Northern Ireland; D012306:Risk; D014815:Vitamins / Q000008:administration & dosage*
chemical_list: D014815:Vitamins