title: Can vitamin supplements prevent neural tube defects? Current evidence and ongoing investigations.
mesh_terms: D002986:Clinical Trials as Topic; D005069:Evaluation Studies as Topic; D005260:Female; D005492:Folic Acid / Q000627:therapeutic use; D005494:Folic Acid Deficiency / Q000150:complications / Q000188:drug therapy; D006801:Humans; D008431:Maternal-Fetal Exchange; D009436:Neural Tube Defects / Q000209:etiology / Q000517:prevention & control*; D011247:Pregnancy; D011897:Random Allocation; D012008:Recurrence; D014815:Vitamins / Q000627:therapeutic use*
chemical_list: D014815:Vitamins; D005492:Folic Acid