1. Trauma Center, Department of Surgery, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea.
2. Division of Trauma Surgery, Department of Surgery, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea.
3. Department of Surgery, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
4. Department of Trauma Surgery, Chungbuk National University Hospital, Cheongju, Korea.
5. Department of Trauma Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
6. Department of Surgery, Gachon University Gil Medical Center, Incheon, Korea.
7. Department of Surgery, Yonsei University College of Medicine, Seoul, Korea.
8. Division of Acute Care Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.