1. Department of Gastroenterology and Hepatology; International Clinical Research Center Research Institute, National Center for Global Health and Medicine; Tokyo Japan
2. Clinical Research and Informatics; International Clinical Research Center Research Institute, National Center for Global Health and Medicine; Tokyo Japan
3. Research Center for Hepatitis and Immunology; National Center for Global Health and Medicine, Kohnodai Hospital; Ichikawa Japan
4. Department of Gastroenterology and Hepatology; National Center for Global Health and Medicine, Kohnodai Hospital; Ichikawa Japan