1. Department of Urology, University Hospital, Tübingen, Germany
2. Caritas St Josef Medical Center, University of Regensburg, Regensburg, Germany
3. CHUQ Hotel-Dieu de Quebec, Quebec, Canada
4. Mayo Clinic, Rochester, Minnesota
5. University of Miami School of Medicine, Miami, Florida
6. Radboud University, Nijmegen Medical Centre, Nijmegen, Netherlands
7. Urology Clinic, München-Planegg, Munich, Germany
8. Department of Urology, Ludwig-Maximilians-University, Campus Grosshadern, Munich, Germany
9. Department of Biostatistics, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
10. Department of Urology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas