1. Department of Rehabilitation Therapy, Chuzan Hospital, Matsumoto, Okinawa, Okinawa, Japan
2. Department of Clinical Research and Quality Management, Graduate School of Medicine, University of The Ryukyus, Nishihara-cho, Okinawa, Japan
3. Clinical Education and Research Center, Chuzan Hospital, Matsumoto, Okinawa, Okinawa, Japan
4. Department of Rehabilitation Medicine, Chuzan Hospital, Matsumoto, Okinawa, Okinawa, Japan
5. Department of Rehabilitation Medicine, Aichi Medical University, Nagakute, Aichi, Japan