1. Department of Oral Surgery and Pathology School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
2. Department of Oral Diagnosis Piracicaba Dental School Universidade de Campinas Piracicaba Brazil
3. Department of Child’s and Adolescent’s Oral Health School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
4. Private Pathology Laboratory Natal Brazil
5. Department of Oral Diagnosis and Pathology School of Dentistry Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil
6. Department of Head and Neck Surgery Hospital Santa Rita Santa Casa de Misericórdia de Porto Alegre Porto Alegre Brazil
7. Service of Pathology Hospital Santa Rita Santa Casa de Misericórdia Porto Alegre Brazil
8. Department of Oral Pathology School of Dentistry Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
9. Department of Oral Medicine Hospital de Clínicas de Porto Alegre Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
10. Department of Dentistry Pontifícia Universidade Católica de Minas Gerais Belo Horizonte Brazil
11. Diagnostic Centre for Oral Diseases School of Dentistry Universidade Federal de Pelotas Pelotas Brazil
12. Service of Oral Pathology Hospital Universitário João de Barros Barreto Universidade Federal do Pará Belém Brazil
13. Department of Oral Pathology School of Dentistry Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil