title: [Evaluation of a programme for the prenatal screening for Down's syndrome by ultrasonographic nuchal translucency measurement and serum determinations in the first trimester of pregnancy].
authors.forename: R
authors.initials: R
authors.lastname: Snijders
mesh_terms: D000328:Adult; D004314:Down Syndrome / Q000097:blood / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D009426:Netherlands; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000706:statistics & numerical data*; D014463:Ultrasonography