1. Department of Medicine, Diabetology and Endocrinology, Juntendo Tokyo Koto Geriatric Medical Centre, Tokyo, Japan
2. Department of Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
3. Centre for Molecular Diabetology, Juntendo University Graduate School of Medicine, Tokyo, Japan
4. Department of Clinical Trials and Clinical Epidemiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
5. Department of Medicine, Nutritional Management Section, Juntendo Tokyo Koto Geriatric Medical Centre, Tokyo, Japan
6. Centre for Therapeutic Innovations in Diabetes, Tokyo, Japan
7. Sportology Centre, Juntendo University Graduate School of Medicine, Tokyo, Japan