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 Health Policy and Administration, Pennsylvania State University, University Park
4. Penn State Cancer Institute, Hershey, Pennsylvania
5. Department of Medical Oncology, Penn State Cancer Institute, Hershey, Pennsylvania
6. Department of Radiation Oncology, Geisinger Health System, Danville, Pennsylvania