1. Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
2. Department of Orthopaedic Surgery, Sinwoo Hospital, Seongnam, Korea
3. Department of Orthopaedic Surgery, Joint Reconstruction Center, Yonsei Sarang Hospital, Bucheon, Korea
4. Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
5. Department of Orthopaedic Surgery, Boramae Medical Center, Seoul, Korea