1. Division of Acute Care Surgery, Department of Surgery, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
2. Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
3. Division of Colorectal Surgery, Department of Surgery, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
4. Center of Evidence Based Medicine, Institute of Convergence Science, Yonsei University, Seoul 03722, Republic of Korea
5. Division of Esophago-Gastrointestinal Surgery, Department of Surgery, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
6. Department of Convergence Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
7. Central Research Laboratory, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
8. Department of Surgery, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea