1. Department of Microbiology, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
2. Carol Yu Centre for Infection, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
3. Department of Pediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China