1. Department of Oral Surgery and Oral Medicine, University of Oslo, Oslo, Norway;
2. Department of Clinical Medicine, Gade Laboratory for Pathology, University of Bergen, Bergen, Norway;
3. Department of Oral Biology, University of Oslo, Oslo, Norway;
4. Department of Informatics, University of Oslo, Oslo, Norway;
5. Bioinformatics Core Facility, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway;
6. Norwegian Computing Centre, Oslo, Norway;
7. Department of Clinical Science, Broegelmann Research Laboratory, University of Bergen, Bergen, Norway;
8. Department of Rheumatology, Haukeland University Hospital, Bergen, Norway;
9. Department of Pathology, Haukeland University Hospital, Bergen, Norway