1. Graduate School of Medicine, Gifu University, Gifu 501-1194, Japan
2. Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo 173-0015, Japan
3. Uji-Tokushukai Medical Center, Kyoto 611-0041, Japan
4. Medical Research Institute Kitano Hospital, Osaka 530-8480, Japan
5. Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba 305-8577, Japan