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First-trimester screening for neural tube defects using alpha-fetoprotein.
Bredaki FE, Poon LC, Birdir C, Escalante D, Nicolaides KH.
Fetal Diagn Ther 2012;31:109-14. -
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.