title: First-trimester screening for Down's syndrome.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Leporrier
authors.forename: Pierre
authors.initials: P
authors.lastname: Leymarie
authors.forename: Michel
authors.initials: M
authors.lastname: Herrou
mesh_terms: D000022:Abortion, Spontaneous; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D009333:Neck / Q000000981:diagnostic imaging; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis / Q000379:methods*; D012680:Sensitivity and Specificity; D014463:Ultrasonography