1. Department of Otolaryngology; Hospital Universitario Central de Asturias; Oviedo Spain
2. Universidad de Oviedo; Instituto de Investigación Sanitaria del Principado de Asturias and CIBERONC; Spain
3. Pathology Department; Liverpool Clinical Laboratories; Liverpool UK
4. School of Dentistry; University of Liverpool; Liverpool UK
5. Department of Otolaryngology; University of Pittsburgh School of Medicine; Pittsburgh Pennsylvania
6. Department of Pathology; University of Arkansas for Medical Sciences; Little Rock Arkansas
7. Professorial Unit; Ear Institute, University College London; London UK
8. Department of Radiation Oncology; Institute of Oncology; Ljubljana Slovenia
9. Department of Hematology and Medical Oncology; The Winship Cancer Institute of Emory University; Atlanta Georgia
10. Departments of Surgery and Otolaryngology; Head and Neck Surgery, Edinburgh University; Edinburgh UK
11. Department of Pathology; Allegiance Health; Jackson Michigan
12. Department of Otolaryngology; Hospital Clinic, University of Barcelona Medical School; Barcelona Spain
13. Department of Head and Neck Surgery; The University of Texas MD Anderson Cancer Center; Houston Texas
14. University of Udine School of Medicine; Udine Italy
15. Coordinator of the International Head and Neck Scientific Group