1. Department of Gastroenterology and Hepatology Nagoya University Graduate School of Medicine Aichi Japan
2. Department of Surgery Prince of Wales Hospital The Chinese University of Hong Kong Shatin Hong Kong
3. Saint George Hospital University Medical Center Faculty of Medicine University of Balamand Beirut Lebanon
4. Department of Gastroenterology Portuguese Oncology Institute of Porto Porto Portugal
5. Medical School Pontificia Catholic University Santiago Chile
6. Department of Medicine Division of Gastroenterology School of Medicine, Teikyo University Tokyo Japan
7. Department of Internal Medicine School of Medicine Konkuk University Seoul Korea
8. Department of Gastroenterology and Hepatology The First Medical Center of Chinese PLA General Hospital Beijing China
9. Junpukai Health Maintenance Center Kurashiki Okayama Japan
10. Department of Gastroenterology Zhejiang Provincial People's Hospital People's Hospital of Hangzhou Medical College Hangzhou China
11. NIHR Nottingham Biomedical Research Centre Nottingham University Hospitals NHS Trust and the University of Nottingham Nottingham UK
12. Department of Gastroenterology and Endoscopy Edouard Herriot Hospital Lyon France
13. Unidad de Gastroenterología Facultad de Medicina Clinica Alemana Universidad del Desarrollo Santiago Chile
14. Department of Endoscopy School of Medicine, The Jikei University Tokyo Japan
15. Ancillary and Diagnosis Services National Institute of Medical Sciences and Nutrition Salvador Zubiran Mexico City Mexico