1. Department of Oral Medicine; Sírio-Libanês Hospital; São Paulo Brazil
2. Oral Pathology; Dental School; Federal University of Pernambuco; Recife Brazil
3. Department of Oral Diagnosis; Piracicaba Dental School; University of Campinas; Piracicaba Brazil
4. Department of Pathology; A C Camargo Cancer Center; São Paulo Brazil
5. Clinical Oncology; Instituto do Câncer do Estado de São Paulo; Faculdade de Medicina; Universidade de São Paulo; São Paulo Brazil
6. Department of Oral Medicine; A C Camargo Cancer Center; São Paulo Brazil