1. Department of Urology, University of Texas M. D. Anderson Cancer Center, Houston, Texas
2. Department of Urology, University Hospital, Tübingen, Germany
3. Centre Hospitalier Universitaire Quebec Hotel-Dieu de Quebec, Quebec, Canada
4. Mayo Clinic, Rochester, Minnesota
5. Urology Clinic, München-Planegg, Munich, Germany
6. Radboud University, Nijmegen Medical Centre, Nijmegen, The Netherlands
7. University of Miami School of Medicine, Miami, Florida
8. Department of Urology, University of Würzburg, Würzburg, Germany