1. Postgraduate Program in Dentistry; Federal University of Santa Catarina; Florianópolis Brazil
2. Brazilian Centre for Evidence-based Research; Florianópolis Brazil
3. Department of Dentistry; Health Sciences Center; Federal University of Santa Catarina; Florianópolis Brazil
4. Department of Oral Medicine; King's College London; London UK
5. WHO Collaborating Centre for Oral Cancer; London UK
6. Laboratory of Oral Histopathology; School of Health Sciences; University of Brasília; Brasilia Brazil
7. Department of Pathology; Health Sciences Center; Federal University of Santa Catarina; Florianópolis Brazil