1. Orthopedic Trauma Division, Trauma Center, Gachon University College of Medicine, Incheon, Korea.
2. Department of Orthopaedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea.
3. Department of Orthopaedic Surgery, Gachon University College of Medicine, Incheon, Korea.
4. Department of Orthopedic Surgery, Ajou University School of Medicine, Suwon, Korea.