Affiliation: | ∗ Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania;† Department of Otorhinolaryngology-Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania;‡ Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania;§ Department of Hematology Oncology, University of Pennsylvania, Philadelphia, Pennsylvania;‖ Johns Hopkins University, Baltimore, Maryland |