title: Down's syndrome screening.
authors.forename: J E
authors.initials: JE
authors.lastname: Haddow
authors.forename: G E
authors.initials: GE
authors.lastname: Palomaki
mesh_terms: D004314:Down Syndrome / Q000453:epidemiology / Q000517:prevention & control*; D005189:False Positive Reactions; D005260:Female; D005820:Genetic Testing; D006801:Humans; D011247:Pregnancy; D016216:Ultrasonography, Prenatal; D014481:United States / Q000453:epidemiology