1. Department of Orthopedic Surgery, Musculoskeletal Research Center, Chang Gung Memorial Hospital-Linkou, Taoyuan, Taiwan
2. Department of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan
3. Department of Pathology, Chang Gung Memorial Hospital-Linkou, Tao-Yuan, Taiwan
4. Department of Orthopedic Surgery, Chang Gung Memorial Hospital-Linkou, Taoyuan, Taiwan