1. Institute of Dentistry, University of Oulu , Oulu, Finland
2. Oral and Maxillofacial Department, Medical Research Center Oulu, Oulu University Hospital , Oulu, Finland
3. Department of Psychiatry, Research Group for Clinical Neuroscience, University of Oulu and Oulu University Hospital , Oulu, Finland
4. Department of Psychiatry, Länsi-Pohja Healthcare District , Kemi, Finland
5. Department of Psychiatry, The Middle Ostrobothnia Central Hospital , Kiuru, Finland
6. Mental Health Services, Joint Municipal Authority of Wellbeing in Raahe District , Raahe, Finland
7. Mental health services, Basic Health Care District of Kallio and Visala Hospital, The Northern Ostrobothnia Hospital District , Ylivieska, Finland
8. Institute of Health Sciences, University of Oulu , Oulu, Finland
9. Department of Psychology, University of Jyväskylä , Jyväskylä, Finland
10. Unit of General Practice, Oulu University Hospital , Oulu, Finland
11. Institute of Dentistry, University of Eastern Finland , Kuopio, Finland
12. Oral and Maxillofacial Department, Kuopio University Hospital , Kuopio, Finland