1. Urology Service, Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, New York
2. Department of Urology, University Hospital Ruhr University Bochum, Marienhospital Herne, Herne, Germany
3. Department of Biostatistics and Epidemiology, Memorial Sloan-Kettering Cancer Center, New York, New York
4. Department of Urology, Tampere University Hospital, Tampere, Finland
5. Department of Urology, Montefiore Medical Center, Bronx, New York
6. Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, New York