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