1. Orthopedic Trauma Division, Trauma Center, Gachon University College of Medicine, Incheon, Korea.
2. Department of Orthopedic Surgery, Uijeongbu St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Korea.
3. Department of Orthopaedic Surgery, Ajou University School of Medicine, Suwon, Korea.
4. Department of Orthopaedic Surgery, Gachon University College of Medicine, Incheon, Korea.