Spina bifida and vitamins.
D000014:Abnormalities, Drug-Induced / Q000209:etiology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000517:prevention & control; D016136:Spina Bifida Occulta / Q000139:chemically induced*; D014801:Vitamin A / Q000009:adverse effects*
D014801:Vitamin A