1. Division of Hepato‑Pancreato‑Biliary Surgery, Department of Surgery, Veterans Health Service Medical Center, Seoul 05368, Republic of Korea
2. Division of Hematology‑Oncology, Department of Internal Medicine, Ewha Womans University Medical Center, Ewha Womans University College of Medicine, Seoul 07985, Republic of Korea
3. Division of Radiology, Veterans Health Service Medical Center, Seoul 05368, Republic of Korea
4. Department of Pathology, Veterans Health Service Medical Center, Seoul 05368, Republic of Korea
5. Division of Hematology‑Oncology, Department of Internal Medicine, Veterans Health Service Medical Center, Seoul 05368, Republic of Korea