[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].
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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