title: Letter: Anencephaly associated with megavitamin therapy.
mesh_terms: D000328:Adult; D000757:Anencephaly / Q000139:chemically induced*; D005260:Female; D006801:Humans; D011247:Pregnancy; D014815:Vitamins / Q000008:administration & dosage / Q000009:adverse effects*
chemical_list: D014815:Vitamins