1. Department of Urology; University Medical Centre Hamburg-Eppendorf; Hamburg Germany
2. Department of Urology; Medical University Vienna; Vienna Austria
3. Department of Urology; Marienhospital Herne; Ruhr-University Bochum; Herne Germany
4. Department of Urology; Ludwig-Maximilians-University Munich; Munich Germany
5. Department of Urology; University Hospital ‘Carl Gustav Carus’; Dresden Technical University; Dresden Germany
6. Department of Urology; Caritas St. Josef Medical Centre; University of Regensburg; Regensburg Germany
7. Department of Urology; General Hospital of Bolzano; Bolzano Italy
8. Department of Urology; 2nd Faculty of Medicine and Motol University Hospital; Prague Czech Republic
9. Department of Urology; Goethe-University Frankfurt; Frankfurt am Main Germany
10. Department of Urology; Vivantes Medical Centre im Friedrichshain and am Urban; Berlin Germany
11. Department of Urology; Kassel Medical Centre; Kassel Germany
12. Department of Urology; Paracelsus Medical Centre Golzheim; Düsseldorf Germany
13. Department of Urology; Cochin Hospital; APHP; Paris Descartes University; Paris France
14. Department of Urology; St. Elisabeth Medical Centre Straubing; Straubing Germany