1. University Medical Centre Mainz, Institute of Medical Biostatistics, Epidemiology and Informatics, Obere Zahlbacher Str. 69, Mainz, Germany, 55131, ;
2. King Hussein Cancer Center, 37559, Amman, Jordan, ;
3. National Cancer Institute and G. Pascale Foundation of Naples, Rehabilitation Medicine, via Mariano Semmola, Napoli, Italy, 80131, , ;
4. Aristotle University of Thessaloniki, 37782, Thessaloniki, Greece, ;
5. Oslo University Hospital, 155272, Otorhinolaryngology, Head and Neck Surgery, Sognsvannsveien 20, Oslo, Norway, 0372, ;
6. Sahlgrenska University Hospital, 56749, Goteborg, Sweden, ;
7. Maugeri Clinical Research Institutes IRCCS, 9292, Internal Medicine, via Salvatore Maugeri 10, Pavia, Italy, 27100, ;
8. Medical University of Innsbruck, 27280, Innsbruck, Tirol, Austria, ;
9. Complejo Hospitalario de Navarra, 83011, Pamplona, Navarra, Spain, ;
10. QIMR Berghofer Medical Research Institute, 56362, Department of Population Health, Brisbane, Queensland, Australia,
11. University of Queensland, 1974, School of Public Health, Brisbane, Queensland, Australia, ;
12. Kobe University Hospital and Graduate School of Medicine, Medical Oncology/Hematology, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Japan, 6500017, ;
13. Johannes-Gutenberg Universitat Mainz Institut fur Medizinische Biometrie Epidemiologie und Informatik, 59960, Obere Zahlbacher Straße 69, Mainz, Germany, 55131, ;
14. University Medical Centre Mainz, Institute of Medical Biostatistics, Epidemiology and Informatics, Mainz, Germany, ;
15. Instituto Português de Oncologia do Porto Francisco Gentil EPE, 59035, Porto, Porto, Portugal, ;
16. Nicosia General Hospital, 74467, Leukosia, Leukosia, Cyprus, ;
17. Netherlands Cancer Institute, 1228, Amsterdam, Noord-Holland, Netherlands, ;
18. Barretos Cancer Hospital , Department of Head and Neck Surgery, Barretos, São Paulo, Brazil, ;
19. Centro di Riferimento Oncologico di Aviano (CRO), Radiation Oncology, VIA FRANCO GALLINI 2, AVIANO, PN, Italy, 33081, ;
20. Velindre Cancer Centre, 269660, Cardiff, Cardiff, United Kingdom of Great Britain and Northern Ireland, ;
21. Oberhavel Kliniken GmbH, 439451, Hennigsdorf, Brandenburg, Germany, ;
22. Institut Jules Bordet, 60210, Surgery, Rue Héger Bordet, 1, Bruxelles, Belgium, 1000, ,
23. Institut Jules Bordet, 60210, Surgery, Bruxelles, Belgium, 1000, , ;
24. Klinik für Endokrinologie und Stoffwechselkrankheiten, Zentrum für Innere Medizin, Hufelandstrasse 55, Essen, Germany, 45147, ;
25. EORTC, Quality of Life Department, E. Mounierlaan 83/11, Brussels, Belgium, 1200, ;
26. Self-help organization of thyroid cancer patients “Ohne Schilddrüse leben e.V.”, Berlin, Germany, ;
27. Lausanne University Hospital, 30635, Lausanne, Vaud, Switzerland, ;