1. Digestive and Lifestyle Diseases, Department of Human and Environmental SciencesKagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
2. Department of Hepatology, Kirishima Medical Center Kagoshima Japan
3. Center for Digestive and Liver Diseases,Miyazaki Medical Center Hospital Miyazaki Japan
4. Department of Hepatology, Kagoshima Kouseiren Hospital Kagoshima Japan
5. Department of Gastroenterology and HepatologyKagoshima City Hospital Kagoshima Japan
6. Department of GastroenterologyNational Hospital Organization Kagoshima Medical Center Kagoshima Japan