1. Department of Traumatology, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon, Korea.
2. Department of Surgery and Trauma Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
3. Department of General Surgery, Haeundae Paik Hospital, Inje University, Busan, Korea.
4. Department of Trauma Surgery, Korea University Guro Hospital, Seoul, Korea.
5. Department of Trauma Surgery, Chungbuk National University Hospital, Cheongju, Korea.
6. Department of Surgery, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea.
7. Division of Acute Care Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
8. Department of Trauma Surgery, Uijeongbu St. Mary Hospital, College of Medicine, The Catholic University of Korea., Seoul, Korea.