1. Department of Orthopaedic Surgery, Gyeongsang National University Hospital, Jinju, Korea.
2. Department of Orthopaedic Surgery, Chung-Ang University College of Medicine, Seoul, Korea.
3. Institute of Health Science, Gyeongsang National University, Jinju, Korea.
4. Department of Preventive Medicine, Gyeongsang National University School of Medicine, Jinju, Korea.
5. Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.