1. Department of Surgery, National Yang-Ming University, Taiwan
2. Department of Orthopedics & Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan
3. Department of Orthopedics, Chiayi Christian Hospital, Chiayi, Taiwan
4. Chung Hwa University of Medical Technology, Tainan, Taiwan
5. Department of Orthopedics, E-Da Hospital/I–Shou University, Kaohsiung, Taiwan