1. Department of Epidemiology and Prevention; Bureau of International Health Cooperation; National Center for Global Health and Medicine; Tokyo Japan
2. Teikyo University Graduate School of Public Health; Tokyo Japan
3. Department of Clinical Research Coordination; Center for Clinical Sciences; National Center for Global Health and Medicine; Tokyo Japan
4. Hitachi Health Care Center; Hitachi, Ltd.; Ibaraki Japan
5. Department of Diabetes Research, Diabetes Research Center; National Center for Global Health and Medicine; Tokyo Japan
6. Department of Endocrinology and Diabetes; Saitama Medical University; Saitama Japan