1. Department of Oral and Maxillofacial Diseases, Clinicum; University of Helsinki; Helsinki Finland
2. Department of Clinical Medicine, Clinicum; University of Helsinki; Helsinki Finland
3. Cancer and Translational Medicine Research Unit; University of Oulu; Oulu Finland
4. Department of Pathology; University of Helsinki; Helsinki Finland
5. Department of Allergy; University of Helsinki and Helsinki University Hospital; Helsinki Finland
6. Department of Pathology, Fimlab Laboratories; Tampere University Hospital; Tampere Finland
7. Medical Research Centre; Oulu University Hospital; Oulu Finland
8. Department of Diagnostics and Oral Medicine, Research Group of Cancer Research and Translational Medicine, Medical Faculty; University of Oulu; Oulu Finland