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Routine first-trimester screening for fetal trisomies in twin pregnancy: cell-free DNA test contingent on results from combined test.
Galeva S, Konstantinidou L, Gil MM, Akolekar R, Nicolaides KH.
Ultrasound Obstet Gynecol 2019;53:208-213. pdf -
First-trimester screening for trisomies by cfDNA testing of maternal blood in singleton and twin pregnancies: factors affecting test failure.
Galeva S, Gil MM, Konstantinidou L, Akolekar R, Nicolaides KH.
Ultrasound Obstet Gynecol 2019;53:804-809. pdf -
Performance of screening for aneuploidies by cell-free DNA analysis of maternal blood in twin pregnancies.
Bevilacqua E, Gil MM, Nicolaides KH, Ordonez E, Cirigliano V, Dierickx H, Willems PJ, Jani JC.
Ultrasound Obstet Gynecol 2015;45:61-6. pdf -
Fetal fraction estimate in twin pregnancies using directed cell-free DNA analysis.
Struble CA, Syngelaki A, Oliphant A, Song K, Nicolaides KH.
Fetal Diagn Ther 2014;35:199-203. pdf -
Cell-free DNA analysis for trisomy risk assessment in first-trimester twin pregnancies.
Gil MM, Quezada MS, Bregant B, Syngelaki A, Nicolaides KH.
Fetal Diagn Ther 2014;35:204-11. pdf