1. Department of Public Health, University of Helsinki, Finland
2. Institute of Molecular Medicine FIMM, University of Helsinki, Finland
3. Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
4. National Institute for Health and Welfare, Finland
5. Joint municipal authority for North Karelia social and health services (Siun sote), Joensuu, Finland
6. Faculty of Social Science, University of Helsinki, Finland
7. Department of Psychological and Brain Sciences, Indiana University, Bloomington, USA