1. Department of Internal Medicine; Jouhoku Hospital; Ishikawa Japan
2. Department of Preventive Medicine; Chidoribashi General Hospital; Fukuoka Japan
3. Department of Internal Medicine; Kuwamizu Hospital; Kumamoto Japan
4. Department of Diabetology and Endocrinology; Sapporo Hokkaido Japan
5. Department of Internal Medicine; Nakano Kyoritsu Hospital; Tokyo Japan
6. Department of Diabetology and Metabolism; Saka General Hospital; Shiogama Miyagi Japan
7. Department of Internal Medicine; Kamiina Co-op Hospital; Kamiina Nagano Japan
8. Department of Internal Medicine; Tanaka Clinic; Abashiri Hokkaido Japan
9. Department of General Medicine; Juntendo University Hospital; Tokyo Japan
10. Department of Diabetology and Endocrinology; Tachikawa Sogo Hospital; Tokyo Japan
11. Department of General Medicine and Primary Care; University of Tsukuba Hospital; Tsukuba Ibaraki Japan
12. Department of Internal Medicine; Kissyouin Hospital; Kyoto Japan