1. Department of Medicine, Kuopio University Hospital, Kuopio, Finland
2. Diabetes and Genetic Epidemiology Unit, Department of Epidemiology and Health Promotion, National Public Health Institute, Helsinki, Finland
3. Department of Public Health Science and General Practice, Unit of General Practice, Oulu University Hospital, Oulu, Finland
4. Finnish Diabetes Association and Tampere University Hospital Research Unit, Tampere, Finland
5. Laboratory for Population Research, Department of Health and Functional Capacity, National Public Health Institute, Turku, Finland
6. Research Department, Social Insurance Institution, Turku, Finland
7. Department of Public Health, University of Helsinki, Helsinki, Finland
8. Department of Clinical Nutrition, University of Kuopio, Kuopio, Finland