1. Department of Urology, University of Health Sciences, Erzurum Regional Training and Research Hospital, Erzurum, Turkey.
2. Department of Anesthesiology and Reanimation, University of Health Sciences, Erzurum Regional Training and Research Hospital, Erzurum, Turkey.
3. Department of Urology, University of Health Sciences, Trabzon Kanuni Training and Research Hospital, Trabzon, Turkey.
4. Department of Urology, Ataturk University Faculty of Medicine, Erzurum, Turkey.