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Maternal serum IGF-I, IGFBP-1 and IGFBP-3 at 11-13 weeks in trisomy 21 and trisomy 18 pregnancies.
Sifakis S, Akolekar R, Kappou D, Mantas N, Nicolaides KH.
Eur J Obstet Gynecol Reprod Biol 2011;157:166-8. -
Fetal nuchal translucency thickness at 10-14 weeks gestation and congenital diaphragmatic hernia.
Sebire NJ, Snijders RJ, Davenport M, Greenough A, Nicolaides KH.
Obstet Gynecol 1997;90:943-6.