1. Tuberculosis and Chest Service, Department of Health, Hong Kong SAR Government, Hong Kong
2. Public Health Laboratory Service Branch, Department of Health, Hong Kong SAR Government, Hong Kong
3. Department of Microbiology, Queen Mary Hospital, The University of Hong Kong, Hong Kong
4. Tuberculosis and Chest Unit, Grantham Hospital, Hong Kong
5. Hong Kong Tuberculosis, Chest and Heart Diseases Association, Hong Kong