title: Vitamins and neural tube defects.
mesh_terms: D005260:Female; D005492:Folic Acid / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D009436:Neural Tube Defects / Q000517:prevention & control*; D011247:Pregnancy; D013997:Time Factors
chemical_list: D005492:Folic Acid