1. Department of Orthopaedic Surgery, Center for Shoulder and Elbow Surgery, Konkuk University School of Medicine, Seoul, Korea.
2. Department of Orthopaedic Surgery, Center for Hand and Elbow Surgery, CM Hospital, Seoul, Korea.
3. Department of Orthopaedic Surgery, Center for Hand and Elbow Surgery, Red Cross Hospital, Seoul, Korea.
4. Department of Orthopaedic Surgery, Center for Hand and Elbow Surgery, Konkuk University School of Medicine Hospital, Seoul, Korea.