| Affiliation: | 1. Department of Medical Oncology, Fox Chase Cancer Center/Temple University, Philadelphia, Pennsylvania;2. Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania;3. Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania;4. Department of Otorhinolaryngology/Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania;5. Department of Internal Medicine, University of Pennsylvania, Philadelphia, Pennsylvania |
