1. Department of Otorhinolaryngology–Head & Neck Surgery, University of Maryland School of Medicine, Baltimore
2. Department of Otorhinolaryngology–Head & Neck Surgery, University of Pennsylvania School of Medicine, Philadelphia
3. Department of Otolaryngology–Head and Neck Surgery, Emory University Hospital Midtown, Atlanta, Georgia
4. Department of Radiation Oncology, University of Pennsylvania School of Medicine, Philadelphia
5. Division of Hematology–Oncology, Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia
6. Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia