1. Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Fukuoka 830‑0011, Japan
2. Department of Surgery, Kurume University School of Medicine, Kurume, Fukuoka 830‑0011, Japan
3. Life Science Research Institute, Saga‑ken Medical Center Koseikan, Saga 840‑8571, Japan
4. Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka 830‑0011, Japan
5. Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka 830‑0011, Japan
6. Department of Radiology, Kurume University School of Medicine, Kurume, Fukuoka 830‑0011, Japan
7. Department of Pathology, Omuta City Hospital, Omuta, Fukuoka 836‑8567, Japan