1. College of Medicine University of Ulsan Songpa‐gu Seoul South Korea
2. Division of Acute Care Surgery Department of Surgery Asan Medical Center University of Ulsan College of Medicine Songpa‐gu Seoul South Korea
3. Department of Clinical Epidemiology and Biostatistics University of Ulsan Songpa‐gu Seoul South Korea
4. Division of Liver Transplantation and Hepatobiliary Surgery Departments of Surgery Asan Medical Center University of Ulsan College of Medicine Seoul South Korea