1. Department of Surgery, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
2. Clinic for General Surgery, University Clinical Centre, 34000 Kragujevac, Serbia
3. Clinic for Urology, Clinical Hospital Centre “Dragisa Misovic”, 11000 Belgrade, Serbia
4. Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
5. Centre for Radiology, University Clinical Centre, 34000 Kragujevac, Serbia
6. Department of Hygiene and Ecology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
7. Centre for Plastic Surgery, University Clinical Centre, 34000 Kragujevac, Serbia
8. Clinic for Urology, University Clinical Centre, 34000 Kragujevac, Serbia
9. Centre for Radiation Oncology, University Clinical Centre, 34000 Kragujevac, Serbia