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Maternal serum visfatin at 11-13 weeks' gestation in preeclampsia.
Ferreira AF, Rezende JC, de Cassia C Oliveira R, Akolekar R, Nicolaides KH.
J Hum Hypertens 2013;27:261-4. -
First-trimester maternal serum matrix metalloproteinase-9 (MMP-9) and adverse pregnancy outcome.
Poon LC, Nekrasova E, Anastassopoulos P, Livanos P, Nicolaides KH.
Prenat Diagn 2009;29:553-9.