DOI:
10.1055/s-00000020
Geburtshilfe und Frauenheilkunde
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References
Ekelund CK, Jørgensen FS, Petersen OB et al. Danish Fetal Medicine Research Group.
Impact of a new national screening policy for Downʼs syndrome in Denmark: population based cohort study.
BMJ 2008;
337: a2547
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