title: [Prenatal diagnosis of anencephaly and open spina bifida by combined use of amniotic or maternal serum alpha-fetoprotein and maternal urine estrogen/creatinine ratio (author's transl)].
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D000757:Anencephaly / Q000175:diagnosis*; D003404:Creatinine / Q000652:urine*; D004967:Estrogens / Q000652:urine*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*; D016136:Spina Bifida Occulta / Q000175:diagnosis*; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D004967:Estrogens; D000509:alpha-Fetoproteins; D003404:Creatinine