%0 Journal Article %T Replacing the Combined Test by Cell-Free DNA Testing in Screening for Trisomies 21, 18 and 13: Impact on the Diagnosis of Other Chromosomal Abnormalities %A Syngelaki, Argyro %A Pergament, Eugene %A Homfray, Tessa %A Akolekar, Ranjit %A Nicolaides, Kypros H. %J Fetal Diagnosis and Therapy %V 35 %N 3 %P 174-184 %@ 1015-3837 %D 2014-01-01 %I S. Karger AG %~ DeepDyve