1. State Key Laboratory for Emerging Infectious Diseases, Department of Microbiology, Carol Yu Centre for Infection, Li Ka Shing Faculty of Medicine, Queen Mary Hospital The University of Hong Kong Hong Kong China
2. Department of Microbiology Queen Mary Hospital Hong Kong China
3. Department of Pathology Princess Margaret Hospital Hong Kong China
4. Department of Medicine and Geriatrics Princess Margaret Hospital Hong Kong China
5. Department of Paediatrics and Adolescent Medicine Princess Margaret Hospital Hong Kong China
6. Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine The University of Hong Kong Hong Kong China
7. Department of Medicine, Li Ka Shing Faculty of Medicine The University of Hong Kong Hong Kong China