1. Department of Molecular Biology, Sapporo Medical University School of Medicine, Sapporo, Japan
2. Department of Gastroenterology, Rheumatology, Clinical Immunology, Sapporo Medical University School of Medicine, Sapporo, Japan
3. Department of Gastroenterology, Akita Red Cross Hospital, Akita, Japan
4. Center for Translational Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
5. Medical Genome Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
6. Department of Molecular Diagnostic Pathology, Iwate Medical University, Morioka, Japan
7. Center for Medical Innovation, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan