1. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
2. Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
3. Division of Gastroenterology and Hepatology, Department of Medicine, National University Hospital, Singapore
4. Digestive Disease Research Institute, School of Medicine, Wonkwang University, Iksan, Jeollabuk-do, Korea
5. Center of Excellence in Neurogastroenterology and Motility, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
6. Division of Gastroenterology, Department of Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
7. Department of Medicine, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation and Tzu Chi University, Hualien, Taiwan
8. Institute of Medical Sciences, College of Medicine, Tzu Chi University, Hualien, Taiwan
9. Department of Medicine, University of Malaya, Kuala Lumpur, Malaysia
10. Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University, Seoul, Korea
11. Department of Gastroenterology and Hepatology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
12. Endoscopy Center for Diagnosis and Treatment, Taipei Veterans General Hospital, Taipei, Taiwan
13. Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
14. Department of Internal Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh, Vietnam
15. Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, Universitas Indonesia/Cipto Mangunkusumo Hospital, Jakarta Pusat, Indonesia
16. Department of Gastroenterology, Sheikh Russel National Gastroliver Institute and Hospital, Dhaka, Bangladesh
17. Gastro Center Ipoh, Ipoh, Malaysia