1. Department of Gastroenterology; Graduate School of Medicine; Kanazawa University; Kanazawa Ishikawa 920-8641 Japan
2. Department of Disease Control and Homeostasis; Graduate School of Medicine; Kanazawa University; Kanazawa Ishikawa 920-8641 Japan
3. Division of Pathology; Kanazawa University Hospital; Kanazawa Ishikawa 920-8641 Japan
4. Department of Human Pathology; Graduate School of Medicine; Kanazawa University; Kanazawa Ishikawa 920-8641 Japan