1. Department of Pathology; The University of Texas MD Anderson Cancer Center; Houston Texas
2. Department of Head and Neck Surgery; The University of Texas MD Anderson Cancer Center; Houston Texas
3. Department of Neurosurgery; The University of Texas MD Anderson Cancer Center; Houston Texas
4. Oral and Maxillofacial Pathology, School of Dentistry, University of Liverpool and Cellular Pathology, University Hospital Aintree; Liverpool United Kingdom
5. Department of Pathology and Immunology; Washington University School of Medicine; St. Louis Missouri
6. Department of Anatomic Pathology; Hospital Clinic, University of Barcelona; Barcelona Spain
7. Department of Pathology; Radboud University Medical Center; Nijmegen The Netherlands
8. Sahlgrenska Cancer Center; Department of Pathology; University of Gothenburg; Gothenburg Sweden
9. Head and Neck Pathology, University Pathologists; Warwick Rhode Island and Fall River, Massachusetts
10. Department of Pathology; Allegiance Health; Jackson Michigan
11. Department of Otolaryngology; Hospital Universitario Central de Asturias; Oviedo Spain
12. Instituto Universitario de Oncología del Principado de Asturias, University of Oviedo; Oviedo Spain
13. University of Udine School of Medicine; Udine Italy
14. Department of Pathology; Beth Israel Medical Center; New York New York
15. Departments of Pathology and Otolaryngology-Head and Neck Surgery; The Johns Hopkins Medical Institutions; Baltimore Maryland
16. Departamento de Ciências; Biomédicas e Medicina, Universidade do Algavre; Faro Portugal
17. Department of Pathology; University of Arkansas for Medical Sciences; Little Rock Arkansas
18. Pathology Division; Shizuoka Cancer Center Hospital and Research Institute; Shizuoka Japan
19. Department of Pathology; Toronto General Hospital, University Health Network; Toronto Ontario Canada
20. Department of Laboratory Medicine and Pathobiology; University of Toronto; Toronto Ontario Canada
21. Department of Otolaryngology-Head and Neck Surgery; Radboud University Medical Center; Nijmegen The Netherlands
22. Coordinator of the International Head and Neck Scientific Group