1. Department of Human Pathology; Kanazawa University Graduate School of Medical Sciences; Kanazawa Japan
2. Department of Radiology; Kanazawa University Graduate School of Medical Sciences; Kanazawa Japan
3. Department of Gastroenterology; Ikeda Municipal Hospital; Osaka Japan
4. Department of Pathology; Teikyo University School of Medicine; Tokyo Japan
5. Department of Gastroenterology; Niigata University Graduate School of Medi; Japan cine Niigata
6. Department of Pathology; Shizuoka Cancer Centre; Shizuoka Japan