title: Screening for Down syndrome.
authors: N J
authors: NJ
authors: Wald
authors: H S
authors: HS
authors: Cuckle
authors: J
authors: J
authors: Sneddon
authors: J E
authors: JE
authors: Haddow
authors: G E
authors: GE
authors: Palomaki
mesh_terms: D004314:Down Syndrome; D006801:Humans; D008403:Mass Screening; D008423:Maternal Age; D012307:Risk Factors; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000509:alpha-Fetoproteins