1. Department of Endocrinology, Metabolism, and Hypertension; Clinical Research Institute; National Hospital Organisation Kyoto Medical Centre; Kyoto Japan
2. Department of Diabetes and Endocrinology; Sapporo City Hospital; Sapporo Japan
3. Department of Diabetes and Endocrinology; Saiseikai Yokohama City Toubu Hospital; Yokohama Japan
4. Department of Cardiology; Akashi Medical Centre; Akashi Japan
5. Department of Cardiology; Sanda City Hospital; Sanda Japan
6. Department of Cardiology; Hiroshima General Hospital of West Japan Railway Company; Hiroshima Japan
7. Department of Cardiology; Saiseikai Tondabayashi Hospital; Tondabayashi Japan
8. Department of Internal Medicine; Matsuyama Red Cross Hospital; Matsuyama Japan
9. Department of Endocrinology and Metabolism; National Hospital Organisation; Kyushu Medical Centre; Fukuoka Japan
10. Department of Public Health; Kitasato University School of Medicine; Tokyo Japan