Article
Prospective first‐trimester screening for trisomies by cell‐free DNA testing of maternal blood in twin pregnancy
12 Mar 2016
Abstract excerpt
OBJECTIVES: First, to examine in twin pregnancies the performance of first-trimester screening for fetal trisomies 21, 18 and 13 by cell-free (cf) DNA testing of maternal blood and, second, to compare twin and singleton pregnancies regarding the distribution of fetal fraction of cfDNA and rate of failure to obtain a result. METHODS: This was a prospective study in 438 twin and 10 698 singleton pregnancies...
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