1. Department of Public Health, University of Helsinki, Helsinki, Finland
2. Diabetes Unit, Department of Health Promotion and Chronic Disease Prevention, National Public Health Institute, Helsinki, Finland
3. Institute for Research in Extramural Medicine, Vrije Universiteit Medical Center, Amsterdam, the Netherlands
4. Department of Medicine, Maastricht University Medical Centre, Maastricht, the Netherlands
5. Imperial College, St Mary's Campus, St Mary's Hospital, London, U.K.
6. Department of Medicine, University of Kuopio, Kuopio, Finland
7. Department of Public Health/Geriatrics, Uppsala University Hospital, Uppsala, Sweden
8. Department of Public Health and Clinical Medicine, University of Umeå, Umeå, Sweden