Oestriol excretion and anencephaly.
D000757:Anencephaly / Q000175:diagnosis*; D000013:Congenital Abnormalities / Q000175:diagnosis; D004964:Estriol / Q000652:urine*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis
D004964:Estriol