1. Gastrointestinal Center & iMEC (Institute of Minimally Invasive Endoscopic Care); Sano Hospital; Kobe Japan
2. Department of Gastroenterology, Asan Medical Center; University of Ulsan College of Medicine; Seoul South Korea
3. Department of Gastroenterology, Key Laboratory of Gastroenterology & Hepatology, Ministry of Health at Renji Hospital; Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Digestive Disease; Shanghai China
4. Institute of Digestive Disease, Faculty of Medicine; Chinese University of Hong Kong, Prince of Wales Hospital; Hong Kong
5. Department of Internal Medicine, College of Medicine; National Taiwan University; Taipei Taiwan
6. Division of Gastroenterology, Department of Medicine, Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
7. Department of Surgery, Institute of Digestive Disease; The Chinese University of Hong Kong; Hong Kong
8. Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease; Institute of Digestive Disease and LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong; Hong Kong