1. Department of Radiation Oncology, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas
2. Department of Medical Oncology, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas
3. Department of Biostatistics, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas
4. Department of Radiation Oncology, MD Anderson Cancer Center, Houston, Texas
5. Department of Radiation Oncology, Baylor Scott & White Memorial Hospital, Temple, Texas
6. Department of Radiation Oncology, Austin Cancer Center, Austin, Texas
7. Department of Radiation Oncology, Texas Oncology Tyler, Tyler
8. Department of Radiation Oncology, Texas Oncology Sherman, Sherman
9. Department of Radiation Oncology, Texas Center for Proton Therapy, Irving
10. Department of Radiation Oncology, Levine Cancer Institute, Atrium Heath, Charlotte, North Carolina
11. Department of Radiation Oncology, Banner MD Anderson Cancer Center, Gilbert, Arizona