1. Department of Endocrinology, Metabolism, Rheumatology, and Nephrology, Faculty of Medicine Oita University Oita Japan
2. Department of Gastroenterology, Faculty of Medicine Oita University Oita Japan
3. Department of Molecular Anatomy, Faculty of Medicine Oita University Oita Japan
4. Department of Gastroenterological and Pediatric Surgery, Faculty of Medicine Oita University Oita Japan