1. Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
2. Institute of Dentistry, University of Eastern Finland, Kuopio, Finland
3. Department of Oral and Maxillofacial Diseases, Kuopio University Hospital, Kuopio, Finland
4. Department of Oral and Maxillofacial Surgery, Oulu University Hospital, Oulu, Finland
5. Unit of Oral Health Sciences, Medical Research Center Oulu (MRC Oulu), Oulu University Hospital and University of Oulu, Oulu, Finland
6. Division of Population and Patient Health, King’s College London Dental Institute, London, United Kingdom
7. Public Health Evaluation and Projection Unit, Finnish Institute for Health and Welfare, Helsinki, Finland