1. Department of Occupational Therapy, Yamagata Prefectural University of Health Sciences, 260 Kamiyanagi, Yamagata 990-2212, Japan
2. Division of Occupational Therapy, Yamagata City Hospital Saiseikan, 1-3-26 Nanukamachi, Yamagata 990-8533, Japan
3. Graduate School of Health Sciences, Yamagata Prefectural University of Health Sciences, 260 Kamiyanagi, Yamagata 990-2212, Japan