1. Department of Radiation Oncology, University of California, Los Angeles, Los Angeles
2. Department of Urology, University of California, Los Angeles, Los Angeles
3. Department of General Internal Medicine and Health Services Research, University of California, Los Angeles, Los Angeles
4. NRG Oncology Statistics and Data Management Center, Philadelphia, Pennsylvania
5. European Organization for Research and Treatment of Cancer Headquarters, Brussels, Belgium
6. Department of Radiation Oncology, Cedars Sinai, Los Angeles, California
7. Department of Radiation Oncology, Centre Hospitalier Universitaire de Grenoble, Grenoble, France
8. Centre Georges-François Leclerc, Dijon, Sorbonne Université Paris, Paris, France
9. Amsterdam University Medical Centers, Academic Medical Center, Amsterdam, the Netherlands
10. Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania
11. Department of Radiation Oncology, Veteran Affairs Greater Los Angeles Healthcare System, Los Angeles, California
12. Division of Hematology and Oncology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles
13. Division of Hematology and Oncology, VA Greater Los Angeles Healthcare System, Los Angeles, Los Angeles, California
14. Department of Radiation Oncology, University of Michigan, Ann Arbor