1. Division of Functional Immunology, Section of Disease Control, Institute for Genetic Medicine Hokkaido University Sapporo Japan
2. Department of Gastroenterological Surgery I Hokkaido University Graduate School of Medicine Sapporo Japan
3. Department of Pathology Asahikawa Medical University Asahikawa Japan
4. DNA Data Analysis Laboratory National Institute of Genetics Mishima Japan
5. Department of Molecular Pathophysiology, Institute of Advanced Medicine Wakayama Medical University Wakayama Japan
6. Department of Surgical Pathology Asahikawa Medical University Asahikawa Japan