title: Screening for Down's syndrome. Serum screening programmes are effective and safe.
authors.forename: N J
authors.initials: NJ
authors.lastname: Wald
authors.forename: A K
authors.initials: AK
authors.lastname: Hackshaw
authors.forename: W
authors.initials: W
authors.lastname: Huttly
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008423:Maternal Age; D011237:Predictive Value of Tests; D011247:Pregnancy; D018566:Pregnancy, High-Risk; D011296:Prenatal Diagnosis / Q000379:methods*; D016216:Ultrasonography, Prenatal
chemical_list: D015415:Biomarkers