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Prediction of early, intermediate and late pre-eclampsia from maternal factors, biophysical and biochemical markers at 11-13 weeks.
Akolekar R, Syngelaki A, Sarquis R, Zvanca M, Nicolaides KH.
Prenat Diagn 2011;31:66-74. -
Maternal serum placental growth factor at 11 + 0 to 13 + 6 weeks of gestation in the prediction of pre-eclampsia.
Akolekar R, Zaragoza E, Poon LC, Pepes S, Nicolaides KH.
Ultrasound Obstet Gynecol 2008;32:732-9.