1. Infection Control Team, Queen Mary Hospital Hong Kong West Cluster Hong Kong Special Administrative Region China
2. Department of Health, Infection Control Branch Centre for Health Protection Hong Kong Special Administrative Region China
3. Department of Pathology Hong Kong Children's Hospital/Queen Elizabeth Hospital Hong Kong Special Administrative Region China
4. Department of Microbiology Li Ka Shing Faculty of Medicine The University of Hong Kong Hong Kong Special Administrative Region China
5. Department of Microbiology Queen Mary Hospital Hong Kong Special Administrative Region China