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Prediction of miscarriage and stillbirth at 11-13 weeks and the contribution of chorionic villus sampling.
Akolekar R, Bower S, Flack N, Bilardo CM, Nicolaides KH.
Prenat Diagn 2011;31:38-45. -
Screening for adverse pregnancy outcome by ductus venosus Doppler at 11-13+6 weeks of gestation.
Maiz N, Valencia C, Emmanuel EE, Staboulidou I, Nicolaides KH.
Obstet Gynecol 2008;112:598-605.