1. McGill University, Montreal, Quebec, Canada
2. Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
3. Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
4. Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
5. Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
6. Department of Urology, Institute of Clinical Sciences, Sahlgrenska Academy at University of Göteborg, Göteborg, Sweden