1. Department of Radiation Oncology, University of California, Los Angeles
2. Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles
3. Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio
4. Department of Urology, The James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland
5. Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
6. Department of Radiation Oncology, Brigham and Women's Hospital/Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
7. Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania
8. Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
9. Department of Radiation Oncology, The Icahn School of Medicine at Mount Sinai, New York, New York
10. Schiffler Cancer Center, Wheeling Hospital, Wheeling Jesuit University, Wheeling, West Virginia
11. Department of Radiation Oncology, University of Michigan, Ann Arbor
12. Department of Oncology, Oslo University Hospital, the Norwegian Radium Hospital, Oslo, Norway
13. Oakland University William Beaumont School of Medicine, Royal Oak, Michigan
14. Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio
15. Department of Radiation Oncology, Veteran Affairs Greater Los Angeles Healthcare System, Los Angeles, California
16. Department of Urology, University of California, Los Angeles
17. Department of Pathology, University of California, Los Angeles
18. Varian Medical Systems, Palo Alto, California