1. NHO Osaka National Hospital, Osaka, Japan
2. Queen Alexandra Hospital, Portsmouth, United Kingdom
3. NIHR Nottingham Digestive Diseases Biomedical Research Centre, Nottingham, United Kingdom
4. Department of Gastroenterology and Hepatology, Gunma University Graduate School of Medicine, Maebashi, Japan
5. Osaka International Cancer Institute, Osaka, Japan
6. Sahlgrenska University Hospital, Gothenburg, Sweden
7. Osaka General Medical Center, Osaka, Japan