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Maternal serum retinol-binding protein-4 at 11-13weeks' gestation in normal and pathological pregnancies.
Nanda S, Nikoletakis G, Markova D, Poon LC, Nicolaides KH.
Metabolism 2013;62:814-9. -
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.