title: Ultrasonographic screening for fetal aneuploidy.
authors.forename: J W
authors.initials: JW
authors.lastname: Seeds
mesh_terms: D000782:Aneuploidy; D002869:Chromosome Aberrations / Q000000981:diagnostic imaging*; D025063:Chromosome Disorders; D005260:Female; D005333:Fetus / Q000002:abnormalities*; D006801:Humans; D009333:Neck / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000196:embryology; D011247:Pregnancy; D016216:Ultrasonography, Prenatal