1. Department of Orthopedics, China Medical University Hospital, Taichung, Taiwan
2. School of Chinese Medicine, China Medical University, Taichung, Taiwan
3. Department of Sports Medicine, China Medical University, Taichung, Taiwan
4. Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
5. Spine Center, China Medical University Hospital, China Medical University, Taichung, Taiwan