1. Department of Microbiology, The University of Hong Kong, University Pathology Building, Queen Mary Hospital, Hong Kong, China
2. Tuberculosis and Chest Unit, Grantham Hospital, Hong Kong, China
3. School of Biomedical Sciences, The Chinese University of Hong Kong, Mong Man Wai Building, Hong Kong, China
4. Shenzhen Institute of Hepatology, Shenzhen Third People's Hospital, Shenzhen, China