1. Department of Oral Diagnosis; Piracicaba Dental School; University of Campinas; Piracicaba Brazil
2. Cancer and Translational Medicine Research Unit; Faculty of Medicine and Medical Research Center; Oulu University Hospital; University of Oulu; Oulu Finland
3. Oral Pathology and Oral Medicine; School of Dentistry; Western Paraná State University; Cascavel Brazil
4. Institute of Oral and Maxillofacial Disease; University of Helsinki, and HUSLAB; Department of Pathology; Helsinki University Hospital; Helsinki Finland