1. Harvard Radiation Oncology Program, Brigham and Women’s Hospital, Massachusetts General Hospital, Boston
2. Department of Radiation Oncology, University of Massachusetts Chan Medical School–Baystate, Springfield, Massachusetts
3. Meharry-Vanderbilt Alliance, Vanderbilt University Medical Center, Vanderbilt University, Nashville, Tennessee
4. Department of Radiation Oncology, Vanderbilt University Medical Center, Nashville, Tennessee