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Maternal serum placental growth hormone at 11-13 weeks' gestation in pregnancies delivering small for gestational age neonates.
Sifakis S, Akolekar R, Kappou D, Mantas N, Nicolaides KH.
J Matern Fetal Neonatal Med 2012;25:1796-9. -
C-reactive protein at 11-13 weeks' gestation in spontaneous early preterm delivery.
Bakalis SP, Poon LC, Vayna AM, Pafilis I, Nicolaides KH.
J Matern Fetal Neonatal Med 2012;25:2475-8.