1. Department of Mechanical Engineering Faculty of Engineering The University of Hong Kong 7/F, Haking Wong Building Pokfulam Road Hong Kong
2. SKL Laboratory of Digestive Disease Li Ka Shing Institute of Health Sciences Department of Medicine and Therapeutics Faculty of Medicine The Chinese University of Hong Kong 30-32 Ngan Shing Street Shatin NT Hong Kong
3. Department of Microbiology Faculty of Medicine The Chinese University of Hong Kong Hong Kong
4. Department of Anaesthesia and Intensive Care Faculty of Medicine The Chinese University of Hong Kong Hong Kong