1. Martin Luther University Halle-Wittenberg; Department of General, Visceral, and Vascular Surgery; Halle Germany
2. Division of Thyroid and Parathyroid Surgery, Department of Otolaryngology; Massachusetts Eye and Ear Harvard Medical School; Boston Massachusetts
3. Division of Surgical Oncology, Endocrine Surgery Service, Department of Surgery; Massachusetts General Hospital, Harvard Medical School; Boston Massachusetts
4. Division for Endocrine Surgery, at the Department of Human Pathology in Adulthood and Childhood “G. Barresi,” University Hospital G. Martino; University of Messina; Italy
5. Kaohsiung Medical University Hospital, Kaohsiung Medical University; Otolaryngology-Head and Neck Surgery; Kaohsiung Taiwan
6. Jagiellonian University, Department of Endocrine Surgery, Third Chair of General Surgery; Krakow Poland
7. University of Iowa Hospitals and Clinics, Otolaryngology; Iowa City Iowa
8. University of Chicago; Division of Endocrine Surgery, Department of Surgery; Chicago Illinois
9. Haukeland Universitetssjukehus; Department of Breast and Endocrine Surgery; Bergen Norway
10. University of Sao Paulo Medical School; Department of Head and Neck Surgery; Sao Paulo SP Brazil
11. Gillies Hospital & Clinics; Epsom New Zealand
12. Cornell University, Clinical Sciences, College of Veterinary Medicine; Ithaca New York
13. VA Outcomes Group at the Veterans Affairs Medical Center; Norwich Vermont
14. Stadtische Kliniken Neuss Lukaskrankenhaus GmbH; Neuss Nordrhein-Westfalen Germany
15. Institut Gustave Roussy, Otolaryngology Head & Neck Surgery; Villejuif France
16. Department of Surgery; Tulane University School of Medicine; New Orleans Louisiana
17. State University of New York Upstate Medical University; Otolaryngology; Syracuse New York
18. Northwestern University Feinberg School of Medicine Department of Psychiatry and Behavioral Sciences, Otolaryngology; Chicago Illinois
19. Stanford University School of Medicine, Otolaryngology, Division of Head and Neck Surgery; Stanford California
20. Cleveland Clinic, Otolaryngology; Cleveland Ohio
21. Alfred Hospital; Melbourne Victoria Australia
22. Monash University School of Languages Literatures Cultures and Linguistics; Clayton Victoria Australia
23. Harvard Medical School, Otolaryngology; Boston Massachusetts
24. Icahn School of Medicine at Mount Sinai, Otolaryngology; New York New York
25. Henry Ford Hospital, Otolaryngology-Head & Neck Surgery; Detroit Michigan
26. University of Texas Rio Grande Valley School of Medicine; Department of General Surgery; Edinburg Texas
27. St. Mary's Hospital, Imperial College Hospitals NHS Trust, St. Mary's Hospital; London United Kingdom
28. OLV Ziekenhuis Aalst; Brussels Belgium
29. Hospital das Clinicas-University of Sao Paulo Medical School; Sao Paulo Brazil
30. Mount Sinai Hospital; Department of Otolaryngology; Toronto Ontario Canada
31. Memorial Sloan-Kettering Cancer Center, Department of Surgery, Head and Neck Service; New York New York
32. 865 Indianola Dr; Merritt Island Florida
33. MD Anderson Cancer Center, Head and Neck Surgery; Houston Texas U.S.A.
34. Allgemeinchirurgie, Uniklinik Halle; Halle/Saale Germany