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Serum beta defensin concentration in the first trimester is related to genotype, and is higher in women who develop PPROM and deliver before 34 weeks.
James C, Bajaj-Elliott M, Syngelaki A, Klein N, Nicolaides KH, Peebles D.
Arch Dis Child Fetal Neonatal Ed 2014;99 Suppl 1:A12. pdf -
Maternal serum ferritin at 11- to 13-week gestation in spontaneous early preterm delivery.
Beta J, Poon LC, Bakalis S, Mosimann B, Nicolaides KH.
J Matern Fetal Neonatal Med 2012;25:1852-5. -
Serum ferritin and cobalamin in red blood cell isoimmunisation.
Abbas A, Nicolaides KH.
Fetal Diagn Ther 1995;10:297-300.