1. Department of Orthopedic Surgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea.
2. Orthopedic Surgery, Hand and Microsurgery Department, Gyeongsang National University Changwon Hospital, Changwon, Korea.
3. Department of Orthopedic Surgery, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
4. Department of Orthopedic Surgery, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.