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Maternal serum insulin-like growth factor (IGF-I) and binding proteins IGFBP-1 and IGFBP-3 at 11-13 weeks' gestation in pregnancies delivering small for gestational age neonates.
Sifakis S, Akolekar R, Kappou D, Mantas N, Nicolaides KH.
Eur J Obstet Gynecol Reprod Biol 2012;161:30-3. -
Prediction of pregnancy complications by first-trimester maternal serum PAPP-A and free beta-hCG and with second-trimester uterine artery Doppler.
Spencer K, Yu CK, Cowans NJ, Otigbah C, Nicolaides KH.
Prenat Diagn 2005;25:949-53.