1. Gaziosmanpaşa University Faculty of Medicine, Department of Urology, Tokat, Turkey

2. Gaziosmanpaşa University Faculty of Medicine, Department of Biostatistics, Tokat, Turkey

3. Private Atasam Hospital, Clinic of Urology, Samsun, Turkey

4. Mardin Artuklu University, Faculty of Health Sciences and Central Research Laboratory, Mardin, Turkey