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Maternal serum progesterone-induced blocking factor at 11-13 weeks gestation in spontaneous early preterm delivery.
Beta J, Szekeres-Bartho J, Skyfta E, Akolekar R, Nicolaides KH.
Fetal Diagn Ther 2011;29:197-200. -
Maternal thyroid function at 11-13 weeks of gestation and spontaneous preterm delivery.
Ashoor G, Maiz N, Rotas M, Jawdat F, Nicolaides KH.
Obstet Gynecol 2011;117:293-8.