1. Department of Otolaryngology–Head and Neck SurgeryUniversity of California, Irvine Medical Center Orange California U.S.A.
2. Department of Otorhinolaryngology–Head and Neck SurgeryUniversity of Pennsylvania Philadelphia Pennsylvania U.S.A.
3. Department of Head and Neck SurgeryUniversity of California, Los Angeles Medical Center Los Angeles California U.S.A.
4. Jonsson Comprehensive Cancer CenterUniversity of California, Los Angeles Medical Center Los Angeles California U.S.A.
5. Head and Neck Cancer ProgramUniversity of California, Los Angeles Medical Center Los Angeles California U.S.A.