1. Department of Otolaryngology, ENT, Head and Neck Surgery, Faculty of Medical Sciences (FCM), University of Campinas (UNICAMP), 13083-888 Campinas, SP, Brazil
2. Pathology Department, Faculty of Medical Sciences (FCM), University of Campinas (UNICAMP), 13083-888 Campinas, SP, Brazil
3. Stomatology Service, ENT Head & Neck Surgery Department, Faculty of Medical Sciences (FCM), University of Campinas (UNICAMP), 13083-888 Campinas, SP, Brazil