1. Oral Pathology Section Department of Oral Diagnosis Piracicaba Dental School University of Campinas (UNICAMP) Piracicaba Brazil
2. Department of Health Care Universidad Autónoma Metropolitana Xochimilco Mexico City Mexico
3. Pathology Section Clinical Center of Head and Neck/Hospital Herrera Llerandi Guatemala City Guatemala
4. Department of Oral Pathology, Oral Medicine and Oral Surgery Faculty of Dentistry Universidad Peruana Ceyetano Heredia Lima Peru