1. Department of Oral Medicine and Pathology Faculdade São Leopoldo Mandic, Research Institute Campinas São Paulo Brazil
2. Faculty of Dentistry, Oral and Craniofacial Sciences King's College London London UK
3. WHO Collaborating Centre for Oral Cancer London UK
4. Department of Pathology, Faculty of Medical Sciences University of Campinas (UNICAMP) Campinas São Paulo Brazil
5. Laboratory of Cancer Genetics School of Medical Sciences, University of Campinas Campinas Brazil
6. Department of Oral Diagnosis School of Dentistry, University of Campinas (FOP/UNICAMP) Piracicaba São Paulo Brazil
7. Universidade Vale do Rio Verde (UninCor) Três Corações Minas Gerais Brazil