1. Department of Pathology; University of Oulu; Oulu Finland
2. Department of Surgery; University of Oulu; Oulu Finland
3. Medical Research Center Oulu; Oulu Finland
4. Oulu University Hospital; Oulu Finland
5. Department of Dentistry; University of Oulu; Oulu Finland
6. Department of Otorhinolaryngology and Head and Neck Surgery; University of Helsinki; Helsinki Finland
7. Department of Otorhinolaryngology and Head and Neck Surgery; Helsinki University Hospital; Helsinki Finland
8. Department of Pathology; Haartman Institute; University of Helsinki; Helsinki Finland
9. Huslab; Helsinki Finland
10. Research Programs Unit; Translational Cancer Biology; University of Helsinki; Helsinki Finland
11. Department of Medicine; University of Alabama at Birmingham; Birmingham AL USA
12. Anatomy and Cell biology; University of Oulu; Oulu Finland