1. Department of Otolaryngology–Head and Neck Surgery, University of Ottawa, Ottawa, Ontario, Canada
2. Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
3. Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
4. Department of Otolaryngology–Head and Neck Surgery, The Ottawa Hospital, Ottawa, Ontario, Canada
5. Department of Otolaryngology–Head and Neck Surgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
6. Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
7. Department of Otolaryngology–Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada
8. Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire
9. Department of Surgery, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
10. Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
11. Department of Surgery, University of Toronto, Toronto, Ontario, Canada
12. Department of Head and Neck Surgery, Amrita Institute of Medical Sciences, Kochi, India
13. Division of Head and Neck Surgery, Fox Chase Cancer Center, Philadelphia, Pennsylvania
14. Department of Otolaryngology–Head and Neck Surgery, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
15. Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, Ohio
16. Department of General Surgery, School of Medicine, University of Alabama at Birmingham, Birmingham
17. The Permanente Medical Group, Santa Rosa, California
18. Department of Otolaryngology–Head and Neck Surgery, School of Medicine, Stanford University, Stanford, California
19. Division of Anatomical Pathology, Department of Pathology, Faculty of Health Sciences, University of Cape Town/National Health Laboratory Services, Groote Schuur Hospital, Cape Town, South Africa
20. Department of Otorhinolaryngology, Head and Neck Surgery, Aarhus University Hospital, Aarhus, Denmark
21. Division of Otolaryngology–Head and Neck Surgery, Department of Surgery, Larner College of Medicine, University of Vermont Medical Center, Burlington
22. Department of Otolaryngology–Head and Neck Surgery, Southern Illinois University School of Medicine, Springfield
23. Department of Otolaryngology–Head and Neck Surgery, Mount Sinai Hospital, New York, New York
24. Department of Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire
25. Department of Otolaryngology–Head and Neck Surgery, College of Medicine, Hanyang University, Seoul, Republic of Korea
26. Department of Otolaryngology–Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio
27. Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston
28. The Thyroid, Head, and Neck Cancer Foundation, New York, New York
29. Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
30. Division of Thyroid and Parathyroid Endocrine Surgery, Department of Otolaryngology–Head and Neck Surgery, Harvard Medical School, Boston, Massachusetts
31. VA Outcomes Group, White River Junction, Vermont
32. Section of Otolaryngology–Head and Neck Surgery, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire