1. Department of Orthopaedic Surgery, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
2. Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea.
3. Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Korea.
4. Department of Orthopedic Surgery, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea.
5. Department of Hand Surgery, Yeson Orthopaedic Hospital, Bucheon, Korea.