Bozkurt Köseoğlu, S., A. Tokmak, and M. Kaba. “Successful Pessary Use During Pregnancy: Report of Three Cases”. Gynecology Obstetrics &Amp; Reproductive Medicine, vol. 19, no. 3, Dec. 2013, pp. 188-9, https://gorm.com.tr/index.php/GORM/article/view/217.