1. Research Group of Oral Health Sciences, Faculty of Medicine, University of Oulu and Oulu University Hospital
2. Institute of Dentistry, Faculty of Health Sciences, University of Eastern Finland
3. Medical Research Center Oulu, University of Oulu and Oulu University Hospital
4. SIB Labs and Department of Applied Physics, Faculty of Science and Forestry, University of Eastern Finland
5. Infrastructure for Population Studies, Faculty of Medicine, University of Oulu
6. Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital
7. Department of Rheumatology, Oulu University Hospital
8. Private practice
9. Educational Dental Clinic, Kuopio University Hospital