1. Urology Service, Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, New York
2. Department of Urology, Sahlgrenska Academy at University of Goteborg, Goteborg, Sweden
3. Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, New York
4. Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York
5. Department of Urology, Weill Medical College of Cornell University, New York, New York