1. Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
2. Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
3. Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
4. Department of Urology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden