title: Nuchal fold and nasal bone: how should we use them in Down syndrome screening?
authors.forename: Ronald J
authors.initials: RJ
authors.lastname: Wapner
mesh_terms: D004314:Down Syndrome / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D016013:Likelihood Functions; D008423:Maternal Age; D009295:Nasal Bone / Q000000981:diagnostic imaging* / Q000473:pathology; D048208:Nuchal Translucency Measurement; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D018570:Risk Assessment; D016217:Ultrasonography, Mammary