1. Department of Urology, Yenimahalle Training and Research Hospital, Ankara, Turkey.
2. Department of Urology, Ankara Training and Research Hospital, Ankara, Turkey.
3. Department of Urology, Adıyaman University, Faculty of Medicine, Adiyaman, Turkey.
4. Department of Urology, Canakkale 18 Mart University, Faculty of Medicine, Canakkale, Turkey.