1. Department of Internal Medicine, Kitakyushu Municipal Medical Center, Japan
2. Department of General Internal Medicine, Kyushu University Hospital, Japan
3. Department of Gastroenterology, Kyushu Medical Center, National Hospital Organization, Japan
4. Department of Hepatology, Steel Memorial Yawata Hospital, Japan
5. Department of Internal Medicine, Chihaya Hospital, Japan
6. The Center for Liver Disease, Shin-Kokura Hospital, Japan
7. Department of Medicine, Hamanomachi Hospital, Japan
8. Center for Liver Disease, National Hospital Organization Kokura Medical Center, Japan
9. Department of Medicine, Kyushu Central Hospital, Japan
10. Department of Medicine, Fukuoka City Hospital, Japan
11. Department of Medicine and Biosystemic Science, Graduate School of Medical Sciences, Kyushu University, Japan
12. Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Japan