1. Department of Radiation Oncology; Dana-Farber Cancer Institute/Brigham and Women's Hospital; Boston Massachusetts
2. Rubin Center for Cancer Survivorship; Department of Radiation Oncology and James P. Wilmot Cancer Center; University of Rochester Medical Center; Rochester New York
3. Department of Statistics; University of Connecticut; Storrs Connecticut
4. Department of Radiation Oncology; The University of Texas MD Anderson Cancer Center; Houston Texas