1. Department of Orthopaedic Surgery, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Republic of Korea
2. Department of Orthopaedic Surgery, Gil Hospital, Gachon University of Medicine and Science, Incheon, Republic of Korea
3. Department of Orthopedic Surgery, Chonnam National University Medical School and Hospital, Hwasun, Republic of Korea
4. Department of Orthopaedic Surgery, ChoongNam National University, College of Medicine and Hospital, Daejeon, Republic of Korea
5. Department of Orthopaedic Surgery, Sungkyunkwan University, College of Medicine, Samsung Medical Center, Seoul, Republic of Korea