1. Department of Radiation Oncology; Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania
2. Center for Clinical Epidemiology and Biostatistics; Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania
3. Abramson Cancer Center; Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania
4. Department of Otorhinolaryngology - Head and Neck Surgery; Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania
5. Leonard Davis Institute of Health Economics; Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania