1. Department of Gastroenterology, JCHO Yokkaichi Hazu Medical Center
2. Department of Internal Medicine, Fujita Health University Nanakuri Memorial Hospital
3. Department of Endocrinology and Metabolism, JCHO Yokkaichi Hazu Medical Center
4. Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine
5. Department of Gastroenterology and Hepatology, Mie University School of Medicine