1. Department of Occupational Therapy, National Hospital Organization Nishiniigata Chuo Hospital, Niigata, Niigata, Japan
2. Graduate School, Niigata University of Health and Welfare, Niigata, Niigata, Japan
3. Department of Occupational Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, Niigata, Niigata, Japan
4. Respiratory Center, National Hospital Organization Nishiniigata Chuo Hospital, Niigata, Niigata, Japan