Kuspinar, G., and B. Avcı. “The Expression Pattern of Prostaglandin-Endoperoxide Synthase-2 in Immature Oocytes and Surrounding Cumulus Cells May Explain A Disrupted Oocyte Maturation Process”. Gynecology Obstetrics &Amp; Reproductive Medicine, vol. 27, no. 3, Dec. 2021, pp. 242-7, doi:10.21613/GORM.2020.1069.