Binkert F, Schinzel A, Mutter M. Impact of prenatal diganosis on the prevalence of live births with Down sysndrome in the eastern half of Switzerland 1980-1996. Swiss Med Wkly [Internet]. 2002 Aug. 24 [cited 2024 Apr. 25];132(3334):478-84. Available from: https://smw.ch/index.php/smw/article/view/205