1. Oral Diagnosis Department Piracicaba Dental School University of Campinas Campinas Brazil
2. Experimental Pathology Unit Porto Alegre Clinics Hospital Porto Alegre Brazil
3. Department of Oral Pathology School of Dentistry Federal University of Rio Grande do Sul Porto Alegre Brazil
4. Laboratory Research Unit Experimental Research Center Porto Alegre Clinics Hospital Porto Alegre Brazil
5. Head and Neck Surgery Department Santa Rita Hospital Santa Casa de Misericórdia de Porto Alegre Porto Alegre Brazil
6. Division of Otorhinolaryngology Porto Alegre Clinics Hospital Porto Alegre Brazil
7. Department of Oral Medicine Porto Alegre Clinics Hospital Porto Alegre Brazil
8. Departments of Oral Biology and Biomedical Engineering Schools of Dental Medicine, Engineering and Applied Sciences State University of New York at Buffalo Buffalo NY USA