1. Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Korea.
2. Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.
3. Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea.
4. Arthroscopy and Joint Research Institute, Yonsei University College of Medicine, Seoul, Korea.
5. Department of Orthopedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.