1. Department of Psychology, University of Helsinki, Helsinki, Finland;
2. Folkhälsan Research Center, Helsinki, Finland;
3. Department of Medicine, Helsinki University Central Hospital and Research Program for Molecular Medicine, University of Helsinki, Helsinki, Finland;
4. Department of General Practice and Primary Health Care, University of Helsinki, Helsinki, Finland;
5. National Institute for Health and Welfare, Helsinki, Finland;
6. Unit of General Practice, Helsinki University Central Hospital, Helsinki, Finland;
7. Vasa Central Hospital, Vasa, Finland;
8. Department of Clinical Sciences–Diabetes and Endocrinology, Clinical Research Center, Lund University, Malmö University Hospital, Malmö, Sweden;
9. Malmska Municipal Health Care Center and Hospital, Jakobstad, Finland.