1. Department of Urology, Klinikum St. Elisabeth Straubing, Straubing, Germany;
2. Centre of Urological Surgery, Dialysis and Renal Transplantation, Fundeni Clinical Institute, Bucharest, Romania;
3. Department of Urology, Vita-Salute San Raffaele University, IRCCS San Raffaele Scientific Institute, Milan, Italy;
4. Department of Urology, Medical University of Vienna, Vienna, Austria;
5. Department of Urology, Hospital Bad Saarow, Bad Saarow, Germany;
6. Department of Urology, Carl-Thiem-Klinikum Cottbus, Cottbus, Germany;
7. Department of Urology and Paediatric Urology, Julius-Maximilians-University Medical Centre of Wuerzburg, Wuerzburg, Germany;
8. Department of Urology, University Hospital Mannheim, Mannheim, Germany;
9. Department of Urology, Klinikum Nürnberg, Nürnberg, Germany;
10. Department of Urology, Carl Gustav Carus University Dresden, University Hospital, Germany;
11. Department of Urology, University Hospital Mainz, Mainz, Germany;
12. Department of Nephrology and Urology, University of Barcelona, Barcelona, Spain;
13. Department of Urology, University of Muenster Medical Center, Muenster, Germany;
14. Department of Urology, Instituto Nacional de Cancerologia-INCan, Mexico City, Mexico;
15. Department of Urology, Medical University Graz, Graz, Austria;
16. Department of Urology, Ludwig-Maximilians University, Campus Grosshadern, Munich, Germany;
17. Department of Urology, Pio Da Pietrelcina Hospital, Vasto, Italy;
18. Department of Urology, Faculty of Medicine, Charles University, Pilsen, Czech Republic