1. Department of Pathology; University of Campinas (UNICAMP); Campinas; SP; Brazil
2. Department of Health Care; Universidad Autónoma Metropolitana Xochimilco; México
3. Department of Oral Pathology; University of Campinas (FOP-UNICAMP); Piracicaba, SP, Brazil; Brazil
4. Department of Oral Pathology; University of São Paulo (FORP-USP); Ribeirão Preto; SP; Brazil
5. Department of Otolaryngology; IUOPA; Hospital Universitario Central de Asturias; Oviedo; Spain