1. Division of Gastroenterology Department of Medicine Kurume University School of Medicine Kurume Japan
2. Storr Liver Centre Westmead Institute for Medical ResearchWestmead Hospital and University of Sydney Sydney NSW Australia
3. Medical Examination Section Medical Examination Part Facilities Public Utility Foundation Saga Prefectural Health Promotion Foundation Saga Japan
4. Division of Metabolism and Endocrinology Faculty of Medicine Saga University Saga Japan