title: Screening in the presence of a vanished twin: nuchal translucency or combined screening test?
authors.forename: Srividhya
authors.initials: S
authors.lastname: Sankaran
authors.forename: Claire
authors.initials: C
authors.lastname: Rozette
authors.forename: Judith
authors.initials: J
authors.lastname: Dean
authors.forename: Pippa
authors.initials: P
authors.lastname: Kyle
authors.forename: Kevin
authors.initials: K
authors.lastname: Spencer
mesh_terms: D000022:Abortion, Spontaneous / Q000000981:diagnostic imaging; D000328:Adult; D002887:Chromosomes, Human, Pair 18; D003937:Diagnosis, Differential; D004314:Down Syndrome / Q000175:diagnosis; D005260:Female; D006801:Humans; D008403:Mass Screening / Q000379:methods; D048208:Nuchal Translucency Measurement / Q000379:methods*; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014314:Trisomy / Q000175:diagnosis; D014427:Twins; D016216:Ultrasonography, Prenatal / Q000379:methods*