Affiliation: | 1. International Research Center, A.C. Camargo Cancer Center, S?o Paulo, SP, Brazil;2. Department of Anatomic Pathology, A.C. Camargo Cancer Center, S?o Paulo, SP, Brazil;3. Department of General Pathology, Dental School, University of S?o Paulo, S?o Paulo, SP, Brazil;4. Department of Head and Neck Surgery and Otorhinolaryngology, AC Camargo Cancer Center, S?o Paulo, SP, Brazil |