1. Department of Urology, Harvard Medical School, Boston, Massachusetts
2. Division of Urology, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts
3. Department of Urology, Kaiser Permanente Santa Rosa Medical Center, Santa Rosa, California
4. Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
5. Department of Radiation Oncology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
6. Division of Urology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada