1. Department of Endocrinology, Metabolism, Hematological Science and Therapeutics, Yamaguchi University Graduate School of Medicine
2. Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine
3. Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine
4. Department of Molecular Pathology, Yamaguchi University Graduate School of Medicine
5. Division of Surgical Pathology, Yamaguchi University Hospital