1. Department of Gastroenterology and Hepatology; Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences; Okayama Japan
2. Health Service Center; Okayama University; Okayama Japan
3. Department of Medicine; Hiroshima City Hospital; Hiroshima Japan
4. Department of Medicine; Tottori City Hospital; Tottori Japan
5. Department of Medicine; Mihara Red Cross Hospital; Mihara Japan
6. Department of Molecular Hepatology; Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences; Okayama Japan