1. Department of Surgery (Section of Otolaryngology) Yale University School of Medicine New Haven Connecticut U.S.A.
2. Depart of Otolaryngology – Head and Neck Surgery University of California Irvine, Orange California U.S.A.
3. Department of Head and Neck Surgery David Geffen School of Medicine at the University of California Los Angeles California U.S.A.
4. Department of Otolaryngology/Head & Neck Surgery University of North Carolina Chapel Hill North Carolina U.S.A.
5. Department of Pathology UNC School of Medicine Chapel Hill North Carolina U.S.A.
6. Lineberger Comprehensive Cancer Center UNC School of Medicine Chapel Hill North Carolina U.S.A.
7. UCLA Head and Neck Cancer Program David Geffen School of Medicine at University of California Los Angeles California U.S.A.
8. Yale Cancer Center Yale School of Medicine New Haven Connecticut U.S.A.