1. Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
2. Medical Center for Dementia, Chiba University Hospital, Chiba, Japan
3. Department of Rehabilitation, Division of Occupational Therapy, Chiba Prefectural University of Health Sciences, Chiba, Japan
4. Urayasu Rehabilitation Education Center, Chiba University Hospital, Urayasu, Japan