1. Diabetes Center, Tokyo Women's Medical University, Tokyo, Japan
2. Department of Epidemiology and Health Promotion, National Public Health Institute, Helsinki
3. Department of Public Health, University of Helsinki, Helsinki, Finland
4. INSERM U258, Villejuif, France
5. Division of Diabetes and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
6. Steno Diabetes Center, Gentofte, Denmark.