[Folic acid and pregnancy--certain knowledge, uncertain practice].
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Medisinsk fødselsregister Armauer Hansens hus, Bergen.
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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*
D006397:Hematinics; D005492:Folic Acid