title: Neural-tube defects.
authors.forename: M M
authors.initials: MM
authors.lastname: Werler
authors.forename: A A
authors.initials: AA
authors.lastname: Mitchell
mesh_terms: D002681:China; D019587:Dietary Supplements; D005492:Folic Acid / Q000008:administration & dosage*; D006801:Humans; D009436:Neural Tube Defects / Q000517:prevention & control*; D018673:Nutrition Policy; D016742:Preconception Care; D014481:United States
chemical_list: D005492:Folic Acid