[Towards a national programme for prenatal screening for Down's syndrome].
Timmermans
D R M
DR
van den Berg
M
M
D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008403:Mass Screening; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*