1. Department of Diagnostic Pathology; Kurume University Hospital; Kurume Japan
2. Department of Pathology; Kurume University School of Medicine; Kurume Japan
3. Division of Gastroenterology; Department of Medicine; Kurume University School of Medicine; Kurume Japan
4. Shin-Koga Hospital; Medical Corporation Tenjinkai; Kurume Japan
5. Department of Pathology; Omuta City Hospital; Omuta Japan