1. Department of Oral Surgery and Pathology, School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
2. Diagnostic Centre for Oral Diseases, School of Dentistry; Universidade Federal de Pelotas; Pelotas Brazil
3. Department of Paediatric Dentistry and Orthodontics, School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
4. Department of Stomathology (Oral Pathology), School of Dentistry; Universidade Federal de Goiás; Goiânia Brazil
5. Department of Oral and Maxillofacial Pathology and Surgery, School of Dentistry; Universidade de Pernambuco; Camaragibe Brazil
6. Department of Oral Pathology, School of Dentistry; Universidade Federal do Rio Grande do Sul; Porto Alegre Brazil
7. Department of Pathology, Health Sciences Centre; Universidade Federal de Santa Catarina; Florianópolis Brazil