1. Department of Physical Medicine and Rehabilitation, China Medical University Hsinchu Hospital, No. 199, Section 1, Xinglong Road, Hsinchu County 302056, Taiwan
2. Department of Physical Therapy and School of Medicine, China Medical University, No. 100, Section 1, Jingmao Road, Beitun District, Taichung City 406040, Taiwan
3. Department of Materials Science and Engineering, National Chung Hsing University, 250, Kuo-Kuang Road, Taichung City 40227, Taiwan