1. Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
2. Department of Endoscopy, Ulaanbaatar Songdo Hospital, Ulaanbaatar, Mongolia
3. Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
4. Department of Internal Medicine, University of Medicine and Pharmacy, Hue University, Hue, Vietnam
5. Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
6. Division of Gastroenterology, Department of Internal Medicine, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
7. Division of Gastroenterology, Department of Medicine, King Chulalongkorn Memorial Hospital, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
8. Department of Gastroenterology, University of Medicine 1 Yangon, Yangon, Myanmar
9. Gastroentorology Unit, Department of Medicine, Faculty of Medicine, National University of Malaysia, Kuala Lumpur, Malaysia