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Prediction of spontaneous preterm delivery from maternal factors, obstetric history and placental perfusion and function at 11-13 weeks.
Beta J, Akolekar R, Ventura W, Syngelaki A, Nicolaides KH.
Prenat Diagn 2011;31:75-83. -
Maternal serum level of placental growth factor in diabetic pregnancies.
Ong CY, Lao TT, Spencer K, Nicolaides KH.
J Reprod Med 2004;49:477-80.