1. Department of Pathology; Hoshigaoka Medical Center; JCHO; Hirakata
2. Digestive Medicine; Hoshigaoka Medical Center; JCHO; Hirakata
3. Department of Diagnostic Pathology; Toho University Medical Center; Ohashi Hospital; Tokyo
4. Department of Diagnostic Pathology; Nara Medical University; Nara Kashihara Japan