Affiliation: | 1. Department of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan.; 2. Department of Bacteriology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan.; 3. Cardiovascular and Pulmonary Branch, NHLBI, National Institutes of Health, Bethesda, Maryland, United States of America.; University of Washington, United States of America, |