1. Evidence‐Based Practice Research Centre (EPRC), Faculty of Health and Social CareEdge Hill University Liverpool UK
2. Consultant Regional Maxillofacial Unit, University Hospital Aintree Liverpool UK
3. Instituto Nacional del Cancer Santiago Chile
4. Cranio‐Maxillo‐Facial Surgery Unit, University Hospital of Modena Modena Italy
5. Hospital Côte de Nacre, ANTICIPE, University Caen‐Normandy
6. Department of Prosthodontics, Faculty of DentistryIstanbul University Istanbul Turkey
7. Royal Brisbane and Women's Hospital, University of Queensland Queensland Australia
8. Department of Oral and Maxillofacial SurgeryUniversity Medical Centre Goettingen Germany
9. Department of OtolaryngologyKaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine Kaohsiung Taiwan
10. Department of OtorhinolaryngologyIuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca, Romania; Emergency County Hospital Cluj‐Napoca Romania
11. Department of Dental and Prosthetic SurgeryTata Memorial Hospital, Homi Bhabha National Institute (HBNI) Mumbai India
12. Department of Community Oral Health & Clinical PreventionUniversity Malaya Kuala Lumpur Malaysia
13. Oral Cancer Research & Coordinating Center, University of Malaya Kuala Lumpur Malaysia
14. Department of Otorhinolaryngology, Head and Neck SurgeryInstitute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Sahlgrenska University Hospital Gothenburg Sweden
15. Department of Oro‐Maxillofacial Surgical & Medical SciencesUniversity Malaya Kuala Lumpur Malaysia
16. Department of Otolaryngology, Head and Neck SurgeryWroclaw Medical University Wrocław Poland
17. Brazilian National Health Institution Rio de Janeiro Brazil
18. Division of Basic SciencesDepartment of Dental Public Health, Faculty of Dentistry, Istanbul University Istanbul Turkey
19. Department of Maxillofacial SurgeryClinic of Dentistry, Medicine Faculty, University of Nis Nis Serbia
20. Otorhinolaryngology‐Head and Neck Surgery DepartmentC.H.U. Liege Liège Belgium
21. Morriston Hospital Swansea UK
22. Head and Neck Surgery and OncologyAmrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham Kochi Kerala India
23. Department of Surgical SciencesSection of Otorhinolaryngology and Head & Neck Surgery, Uppsala University Uppsala Sweden
24. Department of OtolaryngologyUniversity Hospital of Modena Modena Italy
25. Evidence‐Based Practice Research Centre (EPRC), Faculty of HealthEdge Hill University Ormskirk UK