1. Oral Diagnosis, Piracicaba Dental School University of Campinas (UNICAMP) São Paulo Brazil
2. Department of Oral Surgery and Pathology, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
3. Unit of Oral & Maxillofacial Pathology, School of Clinical Dentistry University of Sheffield Sheffield UK
4. Department of Head and Neck Surgery University of Sao Paulo Medical School and Department of Head and Neck Surgery and Otorhinolaryngology, AC Camargo Cancer Center Sao Paulo Brazil
5. Department of Otolaryngology‐Head and Neck Surgery University of Missouri Columbia Missouri USA
6. Department of Bond Life Sciences Center University of Missouri Columbia Missouri USA
7. King's College London London UK
8. WHO Collaborating Centre for Oral Cancer London UK
9. Section of Hematology/Oncology, Department of Medicine University of Chicago Chicago Illinois USA