1. Department of Orthopaedic Surgery, Uijeongbu St. Mary’s Hospital, College of Medicine, Catholic University of Korea, Uijeong bu-si, Gyeonggi-do, South Korea
2. Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, South Korea
3. Department of Orthopaedic Surgery, Dong-A University Medical Center, College of Medicine, Dong-A University, Busan, South Korea