1. Department of Rehabilitation, International University of Health and Welfare, Narita Hospital, Narita-City, Japan
2. Department of Neuropsychiatry, Ashikaga Red Cross Hospital, Ashikaga-City, Japan
3. Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
4. Department of Rehabilitation, Kawagoe Rehabilitation Hospital, Kawagoe-City, Japan