1. Department of Radiation Oncology, Penn State Cancer Institute, Hershey, Pennsylvania
2. Department of Public Health Sciences, Penn State College of Medicine, Hershey, Pennsylvania
3. Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida
4. Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, New York
5. Division of Hematology and Oncology, Department of Pediatrics, Penn State Cancer Institute, Hershey, Pennsylvania
6. Department of Radiation Medicine, Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
7. McGovern Medical School, University of Texas, Houston, Texas