1. Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania U.S.A.
2. Department of Otorhinolaryngology – Head and Neck Surgery, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania U.S.A.
3. Corporal Michael J. Crescenz VAMC Philadelphia Pennsylvania U.S.A.
4. Department of Otolaryngology – Head and Neck Surgery University of Kansas School of Medicine, University of Kansas Kansas City Kansas U.S.A.
5. Department of Radiation Oncology, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania U.S.A.
6. Department of Ophthalmology, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania U.S.A.