1. Department of Gastroenterology and Hepatology; National Center for Global Health and Medicine; Tokyo Japan
2. Department of Clinical Research and Informatics of the International Clinical Research Center Research Institute; National Center for Global Health and Medicine; Tokyo Japan
3. Department of Clinical Pathology; National Center for Global Health and Medicine; Tokyo Japan
4. Department of Infectious Disease; National Center for Global Health and Medicine; Tokyo Japan
5. Division of AIDS Clinical Center (ACC); National Center for Global Health and Medicine; Tokyo Japan
6. Department of Gastroenterology and Hepatology; Kohnodai Hospital; National Center for Global Health and Medicine; Tokyo Japan