title: Simplification of biochemical screening for Down syndrome.
authors: H S
authors: HS
authors: Cuckle
authors: J W
authors: JW
authors: Densem
authors: N J
authors: NJ
authors: Wald
mesh_terms: D000328:Adult; D000649:Amniocentesis; D006063:Chorionic Gonadotropin / Q000032:analysis; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D005820:Genetic Testing; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D006063:Chorionic Gonadotropin; D000509:alpha-Fetoproteins