1. VU University Medical Centre; Amsterdam The Netherlands
2. Geneva University Hospitals and Faculty of Medicine; Geneva Switzerland
3. University of Oxford; Oxford UK
4. La Paloma Hospital; Las Palmas de Gran Canaria Spain
5. Seattle Epidemiologic Research and Information Centre-Department of Veterans Affairs Puget Sound Health Care System and the University of Washington; Seattle WA USA
6. Nottingham University Hospitals Trust; Nottingham UK
7. University of Manitoba; Winnipeg MB Canada
8. WHO-collaborating Centre for Diabetes, National Hospital Organisation; Kyoto Medical Centre; Kyoto Japan
9. University of Texas Southwestern Medical Center and Parkland Hospital; Dallas TX USA
10. Gustave Dron Hospital; Tourcoing France
11. University Medical Centre; Ljubljana Slovenia