title: Neural tube defects.
authors.forename: Fu-Lin
authors.initials: FL
authors.lastname: Wang
authors.forename: Hude
authors.initials: H
authors.lastname: Quan
authors.forename: Donald
authors.initials: D
authors.lastname: Schopflocher
mesh_terms: D000028:Abortion, Induced; D015982:Bias; D005260:Female; D005492:Folic Acid / Q000097:blood; D006801:Humans; D007198:Indians, North American; D009436:Neural Tube Defects / Q000208:ethnology*; D009864:Ontario / Q000453:epidemiology; D011247:Pregnancy / Q000097:blood; D011256:Pregnancy Outcome / Q000208:ethnology; D011295:Prenatal Care; D018570:Risk Assessment
chemical_list: D005492:Folic Acid