1. Head and Neck Surgery Department University of São Paulo Medical School São Paulo Brazil
2. Oral Diagnosis Department Piracicaba Dental School Piracicaba Brazil
3. Institute of Science and Technology Federal University of São Paulo São José dos Campos Brazil
4. Department of Oral Surgery and Pathology, School of Dentistry Federal University of Minas Gerais (UFMG) Belo Horizonte Brazil
5. Serviço de Odontologia Hospital Vila Nova Star, Rede D'Or São Paulo Brazil
6. Serviço de Medicina Bucal Hospital Sírio‐Libanês São Paulo Brazil
7. Service of Oral Pathology João de Barros Barreto University Hospital, Federal University of Pará Belém Brazil
8. Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry University of Sheffield Sheffield UK
9. Section of Hematology/Oncology, Department of Medicine University of Chicago Chicago Illinois USA
10. Department of Oral Pathology, School of Dentistry Federal University of Rio Grande do Sul Porto Alegre Brazil
11. Department of Head and Neck Surgery and Otorhinolaryngology A.C. Camargo Cancer Center São Paulo Brazil
12. Head and Neck Surgery Department and LIM 28 University of São Paulo Medical School São Paulo Brazil