1 Department of Oral Diagnosis, School of Dentistry, University of Campinas, São Paulo, Brazil.
2 Department of Oral Biology & Diagnostic Sciences, The Dental College of Georgia at Augusta University, Augusta, GA, United States.
3 Cancer and Translational Medicine Research Unit, Faculty of Medicine and Medical Research Center Oulu, Oulu University Hospital, University of Oulu, Oulu, Finland.
4 HUSLAB, Department of Pathology, Institute of Oral and Maxillofacial Disease, University of Helsinki, Helsinki University Hospital, Helsinki, Finland.