1. Department of Oral Diagnosis (Pathology and Semiology); 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. Oral Pathology; School of Dentistry; State University of Rio de Janeiro; Rio de Janeiro Brazil
4. Oral and Maxillofacial Surgery; State University of Rio de Janeiro; Rio de Janeiro Brazil
5. Department of Diagnosis and Surgery; Araraquara Dental School; Universidade Estadual Paulista; Araraquara Brazil
6. Centro Clinico de Cabeza y Cuello; Guatemala City Guatemala
7. School of Dentistry; Federal University of Pará; Belém Brazil
8. Instituto Esperança de Ensino Superior; Santarém Brazil
9. Department of Oral Pathology; School of Dentistry; Pontifícia Universidade Católica de Minas Gerais; Belo Horizonte Brazil
10. Department of Oral Surgery and Pathology; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil