1. Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute The Chinese University of Hong Kong Hong Kong, China
2. Department of Microbiology, Faculty of Medicine The Chinese University of Hong Kong Hong Kong, China
3. Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine Shanghai Jiaotong University Shanghai China