| Affiliation: | 1. Health Service Center, Hiroshima University, Higashihiroshima, Japan;2. Department of Endoscopy, University Medical Center, Ho Chi Minh, Vietnam;3. Department of Gastroenterology, Gia‐Dinh People's Hospital, Ho Chi Minh, Vietnam;4. Faculty of Human Culture and Science, Prefectural University of Hiroshima, Hiroshima, Japan;5. Department of Gastroenterology and Metabolism, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan;6. Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan;7. Department of Gastroenterology and Hepatology, National Center for Global Health and Medicine, Kohnodai Hospital, Ichikawa, Japan |
