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Serum alpha-fetoprotein in the three trimesters of pregnancy: effects of maternal characteristics and medical history.
Bredaki FE, Sciorio C, Wright A, Wright D, Nicolaides KH.
Ultrasound Obstet Gynecol 2015;46:34-41. pdf -
First-trimester screening for trisomies 21, 18 and 13 by ultrasound and biochemical testing.
Wright D, Syngelaki A, Bradbury I, Akolekar R, Nicolaides KH.
Fetal Diagn Ther 2014;35:118-26. pdf