1. Department of Microbiology and Carol Yu Centre for Infection, University of Hong Kong, Hong Kong SAR, PR China
2. Department of Clinical Pathology, Tuen Mun Hospital, Hong Kong SAR, PR China
3. Department of Clinical Pathology, Kwong Wah Hospital, Hong Kong SAR, PR China
4. Department of Clinical Pathology, Princess Margaret Hospital, Hong Kong SAR, PR China