1. Department of Therapeutic Radiology Yale School of Medicine New Haven Connecticut
2. Department of Radiation Oncology, Dana‐Farber Cancer Institute/Brigham and Women's Hospital Harvard Medical School Boston Massachusetts
3. Harvard Medical School Boston Massachusetts
4. Department of Radiation Oncology University of Michigan Ann Arbor Michigan
5. Departmentof Radiation Oncology University of Texas Southwestern Medical Center Dallas Texas
6. Helen Diller Family Comprehensive Cancer Center University of California at San Francisco San Francisco California
7. Harvard T. H. Chan School of Public Health Boston Massachusetts