1. Department of Orthopaedic Surgery, Armed Force Hampyeong Hospital, Hampyeong, Korea.
2. Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
3. Department of Vascular Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
4. Department of Orthopaedic Surgery, Myongji Hospital, Goyang, Korea.
5. Department of Orthopaedic Surgery, Konyang University Hospital, Daejeon, Korea.