Affiliation: | 1. Accident and Emergency Department, Princess Margaret Hospital, Kowloon, Hong Kong;2. Central Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Victoria, Australia;3. Emergency Department, Princess Royal University Hospital, London, UK;4. Accident and Emergency Medicine Academic Unit, Chinese University of Hong Kong, Hong Kong;5. Emergency Medicine Academic Unit, Cardiff University, Wales, UK |