1. Department of Orthopedic Surgery, Daejeon St. Mary’s Hospital, College of Medicine, Catholic University of Korea, Daejeon, Republic of Korea.
2. Department of Orthopedic Surgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea.
3. Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea.