1. Federal University of Rio Grande do Norte Natal Brazil
2. Department of Oral Diagnosis, School of Dentistry University of Campinas (UNICAMP) Piracicaba Brazil
3. Cancer and Translational Medicine Research Unit, Faculty of Medicine and Medical Research Center Oulu Oulu University Hospital, University of Oulu Oulu Finland
4. Department of Pathology, Helsinki University Hospital Institute of Oral and Maxillofacial Disease, University of Helsinki, and HUSLAB Helsinki Finland
5. School of Dentistry University of Campinas Piracicaba Brazil