title: [Folic acid and pregnancy--certain knowledge, uncertain practice].
authors.affiliation: Medisinsk fødselsregister Armauer Hansens hus, Bergen.
authors.forename: S E
authors.initials: SE
authors.lastname: Vollset
authors.forename: L M
authors.initials: LM
authors.lastname: Irgens
mesh_terms: D000013:Congenital Abnormalities / Q000209:etiology / Q000517:prevention & control; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage* / Q000009:adverse effects; D005494:Folic Acid Deficiency / Q000150:complications*; D006397:Hematinics / Q000008:administration & dosage* / Q000009:adverse effects; D006801:Humans; D009664:Norway; D011247:Pregnancy; D011248:Pregnancy Complications / Q000139:chemically induced*
chemical_list: D006397:Hematinics; D005492:Folic Acid