1. Department of Head and Neck Surgery; David Geffen School of Medicine at UCLA; the UCLA Head and Neck Cancer Program; Los Angeles California U.S.A.
2. Department of Orthopaedic Surgery; David Geffen School of Medicine at UCLA; the UCLA Head and Neck Cancer Program; Los Angeles California U.S.A.
3. UCLA Jonsson Comprehensive Cancer Center; Los Angeles California U.S.A.