title: Nuchal translucency and trisomy 18.
authors.forename: N J
authors.initials: NJ
authors.lastname: Wald
authors.forename: A K
authors.initials: AK
authors.lastname: Hackshaw
authors.forename: H
authors.initials: H
authors.lastname: Watt
mesh_terms: D002898:Chromosomes, Human, Pair 8; D005260:Female; D006801:Humans; D009333:Neck / Q000196:embryology*; D011237:Predictive Value of Tests; D011247:Pregnancy; D014314:Trisomy