Bayar, Ülkü, Görkem Mungan, Mustafa Başaran, Sibel Kıran, Volkan Akbulut, and Murat Can. 2006. “Effects of Metformin on Menstrual Cyclicity in Women With Polycystic Ovary Syndrome”. Gynecology Obstetrics &Amp; Reproductive Medicine 12 (2). Ankara, TR:116-20. https://gorm.com.tr/index.php/GORM/article/view/582.