1. Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
2. Department of Gastrointestinal and Hepato‑Biliary‑Pancreatic Surgery, Nippon Medical School, Tokyo 113‑8603, Japan
3. Department of Integrative Oncological Pathology, Nippon Medical School, Tokyo 113‑8603, Japan
4. Department of Pathology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea