1. Faculty of Health and Sport Sciences; Tsukuba Japan
2. Graduate School of Comprehensive Human Sciences; University of Tsukuba; Tsukuba Japan
3. Department of Community-based Medicine; Nagoya City University Graduate School of Medicine; Nagoya Japan
4. Choju Medical Institute; Fukushimura Hospital; Toyohashi Japan
5. Departments of Neurology; University of Pittsburgh; Pittsburgh USA
6. Geriatric Research Education and Clinical Center; VA Pittsburgh Healthcare System; Pittsburgh USA
7. Psychiatry; University of Pittsburgh; Pittsburgh USA