1. Department of Otolaryngology–Head and Neck Surgery, Princess Margaret Cancer Center, Toronto, Ontario, Canada
2. Division of Head and Neck Surgery, Department of Otolaryngology–Head and Neck Surgery, Stanford University, Palo Alto, California
3. Department of Otolaryngology–Head and Neck Surgery, University of Alabama at Birmingham
4. Department of Otorhinolaryngology–Head and Neck Surgery, Montefiore Medical Center, Albert Einstein College of Medicine, New York, New York
5. Department of Otolaryngology–Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota
6. Catholic University of Louvain at Mont-Godinne, Yvoir, Belgium
7. Department of Surgery, Head and Neck Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
8. New York Head and Neck Institute, North Shore Health System, New York, New York
9. Department of Otolaryngology Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
10. Department of Otolaryngology–Head and Neck Surgery, University of Pittsburgh Medical Center, Veterans Affairs Pittsburgh HealthCare System, Pittsburgh, Pennsylvania
11. Department of Otolaryngology–Head and Neck Surgery, University of California, San Francisco
12. Department of Head and Neck Surgery, MD Anderson Cancer Center, Houston, Texas
13. Severance Hospital, Yonsei University School of Medicine, Seoul, Korea
14. Division of Head and Neck Surgery, Department of Otolaryngology–Head and Neck Surgery, Stanford University, Palo Alto, California12Department of Head and Neck Surgery, MD Anderson Cancer Center, Houston, Texas