1. Diabetes Center, Aizawa Hospital, Matsumoto, Japan
2. Department of Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
3. Sportology Centerm Juntendo University Graduate School of Medicine, Tokyo, Japan
4. Department of Internal Medicine, Iida Municipal Hospital, Iida, Japan
5. Health Center, Aizawa Hospital, Matsumoto, Japan