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Maternal and neonatal outcomes in women undergoing bariatric surgery: a systematic review and meta-analysis.
Galazis N, Docheva N, Simillis C, Nicolaides KH.
Eur J Obstet Gynecol Reprod Biol 2014;181:45-53. pdf -
First-trimester maternal plasma cell-free fetal DNA and preeclampsia.
Sifakis S, Zaravinos A, Maiz N, Spandidos DA, Nicolaides KH.
Am J Obstet Gynecol 2009;201:472.1-7.