Varol, F., N. Er, N. Sut, and C. N. Sayin. “A Local Study on Antenatal Features of Preterm Births at 26-32 Versus 33-36 Weeks of Pregnancy”. Gynecology Obstetrics &Amp; Reproductive Medicine, vol. 24, no. 1, Apr. 2018, pp. 1-6, doi:10.21613/GORM.2016.695.