title: Should sonographic screening for fetal Down syndrome be applied to low risk women?
authors.forename: B R
authors.initials: BR
authors.lastname: Benacerraf
mesh_terms: D004314:Down Syndrome / Q000000981:diagnostic imaging* / Q000235:genetics; D005260:Female; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D012307:Risk Factors; D016216:Ultrasonography, Prenatal