1. Department of Diabetes and Endocrine Internal Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
2. Center for Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
3. Department of Neurology; Chubu Rosai Hospital; Nagoya University Graduate School of Medicine; Nagoya Japan
4. Department of Geriatrics; Nagoya University Graduate School of Medicine; Nagoya Japan
5. Department of Psychiatry; Nagoya University Graduate School of Medicine; Nagoya Japan
6. Diabetic Center; Aichi Medical University; Nagakute Japan