1. Department of Orthopaedic Surgery, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.
2. Department of Orthopaedic Surgery, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwasung, Korea.
3. Department of Orthopaedic Surgery, Hallym University Gangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.