Ultrasound in Obstetrics and Gynecology · 2018 · 32 citations · 22 references
This study has demonstrated the feasibility of introducing cfDNA testing, contingent on the results of the first-trimester combined test for major trisomies, in a routine population of twin pregnancies. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd.
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Andrew B. Sparks, Craig A. Struble, Eric T. Wang et al. · American Journal of Obstetrics and Gynecology · 2012 · 393 citations
Karl Oliver Kagan, D. Wright, Kevin Spencer et al. · Ultrasound in Obstetrics and Gynecology · 2008 · 285 citations · Full text