1. Department of Orthopedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
2. Department of Orthopedic Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
3. Department of Orthopedic Surgery, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Gyeonggi-do, South Korea
4. Department of Orthopedic Surgery, Jeju National University Hospital, Jeju National University School of Medicine, Jeju, South Korea
5. R & D center, Curexo Inc., Seoul, South Korea