1. Department of Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
2. Research Programs Unit, Translational Cancer Biology, University of Helsinki, Helsinki, Finland
3. Department of Pathology, University of Helsinki and HUSLAB, Helsinki University Hospital, Helsinki, Finland
4. Department of Oral and Maxillofacial Diseases, Helsinki University Hospital and Biomedicum Helsinki, Helsinki, Finland
5. Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden