1. Department of Pathology Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama University OkayamaJapan
2. Divison of Research and Development DNA Chip Research Yokohama Japan
3. Centre for Lymphoid Cancer British Columbia Cancer Agency Vancouver BC Canada
4. Department of Hematology, Oncology and Respiratory Medicine Graduate School of Medicine Okayama University OkayamaJapan
5. Division of Gastroenterology Department of Internal Medicine Hiroshima Red Cross Hospital and Atomic‐Bomb Survivors Hospital HiroshimaJapan
6. Department of Gastroenterology and Hepatology Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences OkayamaJapan
7. First Department of Internal Medicine Graduate School of Medicine Gifu UniversityGifu Japan
8. Endoscopy Center Gifu University Hospital Gifu Japan