1. Center for Cancer Research and Department of Surgery; Massachusetts General Hospital; Boston Massachusetts
2. Department of Otolaryngology; Massachusetts Eye and Ear Infirmary, Harvard Medical School; Boston Massachusetts
3. Department of Head and Neck Surgery; The University of Texas MD Anderson Cancer Center; Houston Texas
4. Department of Otolaryngology; University of Pittsburgh Cancer Institute; Pittsburgh Pennsylvania
5. Department of Radiation Oncology; University of Pittsburgh Cancer Institute; Pittsburgh Pennsylvania
6. Department of Immunology; University of Pittsburgh Cancer Institute; Pittsburgh Pennsylvania