Affiliation: | 1. Department of Surgery, Head and Neck Surgery Service, Brazilian National Cancer Institute, Rio de Janeiro, Brazil;2. Department of Surgery, Head and Neck Surgery Service, Chief, Brazilian National Cancer Institute, Rio de Janeiro, Brazil;3. Department of Surgical Pathology, Brazilian National Cancer Institute, Rio de Janeiro, Brazil;4. Department of Oral Pathology, Federal University of Uberlandia, Minas Gerais, Brazil |