1. Department of Head and Neck Surgery David Geffen School of Medicine at University of California Los Angeles, Los Angeles (UCLA) Los Angeles California U.S.A.
2. University of California Los Angeles, Los Angeles (UCLA) Head and Neck Cancer Program Los Angeles California U.S.A.
3. Department of Pathology David Geffen School of Medicine at University of California Los Angeles, Los Angeles (UCLA) Los Angeles California U.S.A.