1. Department of Oral Diagnosis Piracicaba Dental School University of Campinas Piracicaba Brazil
2. Service of Oral Pathology João de Barros Barreto University Hospital Federal University of Pará Belém Brazil
3. Department of Oral Surgery and Pathology School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
4. Medical School Universidad de Antioquia Medellín Colombia
5. Department of Histopathology Queen Alexandra Hospital Portsmouth UK
6. Department of Oral and Maxillofacial Surgery Queen Alexandra Hospital Portsmouth UK