1. Division of Thyroid and Parathyroid Endocrine Surgery, Department of Otolaryngology–Head and Neck Surgery, Massachusetts Eye and Ear Infirmary Harvard Medical School Boston Massachusetts U.S.A.
2. Department of Otolaryngology–Head and Neck Surgery Stanford University School of Medicine Stanford California U.S.A.
3. Department of Head and Neck Surgery The University of Texas M. D. Anderson Cancer Center Houston Texas U.S.A.
4. Department of Otolaryngology–Head and Neck Surgery University of Virginia Health System Charlottesville Virginia U.S.A.
5. Division of Otolaryngology–Head and Neck Surgery, Department of Surgery NorthShore University HealthSystem Evanston Illinois U.S.A.
6. The University of Chicago, Pritzker School of Medicine Chicago Illinois U.S.A.
7. Department of Otolaryngology–Head and Neck Surgery Kaiser Permanente Santa Clara Medical Center Santa Clara California U.S.A.
8. McGovern Medical School at University of Texas Health Science Center Houston Texas U.S.A.
9. Harvard Medical School Boston Massachusetts U.S.A.
10. Department of Medicine Massachusetts General Hospital, Harvard Medical School Boston Massachusetts U.S.A.
11. Department of Surgery Massachusetts General Hospital, Harvard Medical School Boston Massachusetts U.S.A.