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