| Affiliation: | 1. Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, , Houston, USA;2. Department of Gastroenterology and Rheumatology, Fukushima Medical University School of Medicine, , Fukushima, Japan;3. Division of Gastroenterology, Stanford University School of Medicine, , Stanford, USA;4. Department of Gastroenterology, Fukushima Medical University Aizu Medical Center, , Aizuwakamatsu, Japan;5. Division of Endoscopy, Fukushima Medical University Hospital, , Fukushima, Japan;6. Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, , Houston, USA;7. Division of Gastroenterology, Hepatology and Nutrition, The University of Texas Medical School at Houston, , Houston, USA |
