Şimşek, Yavuz, Nasuh Utku Doğan, and Oya Şengezer. “Multifetal Pregnancy Following Emergency Contraceptive Pill Containing Levonorgestrel: Case Report”. Gynecology Obstetrics & Reproductive Medicine 16, no. 3 (December 11, 2010): 178–180. Accessed April 28, 2024. https://www.gorm.com.tr/index.php/GORM/article/view/366.