1. Institute of Biomedical Engineering, National Taiwan University, Taiwan
2. Division of Orthopedic Surgery, Department of Surgery, Far Eastern Memorial Hospital, Taiwan
3. Department of Orthopedics, National Taiwan University Hospital, Taiwan
4. Department of Orthopedics, College of Medicine, National Taiwan University, Taiwan
5. School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University: Room 326, Floor 3, No. 17, Xuzhou Road, Zhongzheng District, Taipei City 100, Taiwan
6. Physical Therapy Center, National Taiwan University Hospital, Taiwan