1. Department of Laboratory Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul; Korea
2. Department of Laboratory Medicine; Ilsan Paik Hospital; Inje University College of Medicine; Goyang; Korea
3. Division of Hepatobiliary Surgery and Liver Transplantation; Department of Surgery; University of Ulsan College of Medicine and Asan Medical Center; Seoul; Korea
4. Department of Anesthesiology and Pain Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul; Korea