1. Piracicaba Dental School University of Campinas Piracicaba, São Paulo Brazil
2. Faculty of Dentistry University of El Salvador San Salvador El Salvador
3. Laboratory of Immunodetection and Bioanalysis, Investigation Group POPCAD, Faculty of Dentistry University of Antioquia Medellín Colombia
4. Research Department, School of Dentistry Universidad Juárez del Estado de Durango Durango Mexico
5. Molecular Pathology Area, School of Dentistry Universidad de la República Montevideo Uruguay
6. Oral Medicine Department, School of Dentistry Universidad Nacional de Córdoba, Haya de la Torre SN Córdoba Argentina
7. Department of Oral Pathology, Oral Medicine and Oral Surgery, School of Dentistry Universidad Peruana Cayetano Heredia Lima Peru
8. School of Dentistry, Faculty of Medical Sciences The University of the West Indies Kingston Jamaica
9. Department of Oral Medicine, Faculty of Dentistry Universitas Airlangga Surabaya Indonesia
10. Universidad de los Andes Facultad de Odontología Santiago Chile
11. Centro de Investigación e Innovación em Biomedicina Universidad de los Andes Las Condes Chile
12. Oral Medicine, Dental School Universidad Central de Venezuela Caracas Venezuela
13. Department of Stomatology, Faculty of Health Sciences University of Talca Talca Chile
14. Oral Pathology, School of Dentistry National University of Asunción Asunción Paraguay
15. Pathology Section Centro Clínico de Cabeza y Cuello/Hospital Herrera Llerandi Guatemala City Guatemala
16. Diagnostic clinic Universidad Autónoma de San Luis Potosí San Luis Potosí Mexico
17. Servicio de Cabeza y Cuello, Instituto Nacional de Oncología y Radiobiología de Cuba La Habana Cuba
18. Corozal Community Hospital Corozal Belize
19. School of Dentistry University of San Carlos Guatemala City Guatemala
20. The Catholic University of Honduras Tegucigalpa Honduras
21. School Dentistry Universidad Autónoma de Santo Domingo Santo Domingo Dominican Republic
22. School Dentistry Universidad, Autónoma de Nicaragua Managua Nicaragua
23. Instituto do Câncer do Estado de São Paulo, Faculdade de Medicina da Universidade de São Paulo São Paulo Brazil
24. Oral Medicine Service, Sírio Libanês Hospital São Paulo Brazil
25. Department of Oral Medicine, School of Dentistry Universidade Federal de Goiás – UFG Goiânia Brazil
26. Department of Head and Neck Surgery and Otorhinolaryngology A.C. Camargo Cancer Center São Paulo Brazil
27. Head and Neck Surgery Department and LIM 28 University of São Paulo Medical School São Paulo Brazil
28. Group of Epidemiology and Statistics on Cancer, A.C. Camargo Cancer Center São Paulo Brazil
29. Epidemiology Department Faculdade de Saude Pública da Universidade de São Paulo São Paulo Brazil
30. Department of Oral Medicine University of Pennsylvania Philadelphia USA
31. International Agency for Research on Cancer Lyon France
32. The WHO Collaborating Centre for Oral Cancer London UK
33. Faculty of Dentistry, Oral and Craniofacial Sciences King's College London London UK