1. Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas
2. Dana-Farber Cancer Institute/Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
3. Division of Biostatistics, Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas
4. Department of Statistical Science, Southern Methodist University, Dallas, Texas
5. Harold Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas
6. Department of Radiation Oncology, Brigham and Women’s Hospital, Boston, Massachusetts
7. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
8. McGraw/Patterson Center for Population Sciences, Dana-Farber Cancer Institute, Boston, Massachusetts