1. South West Sydney Clinical School, University of New South Wales, Sydney, NSW, Woolcock Institute of Medical Research, Sydney, NSW, Australia;
2. South West Sydney Clinical School, University of New South Wales, Sydney, NSW,
3. Woolcock Institute of Medical Research, Sydney, NSW, Australia;
4. National Lung Hospital, Hanoi, National Tuberculosis Control Programme, Hanoi, Vietnam, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
5. Woolcock Institute of Medical Research, Sydney, NSW, Australia;, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
6. National Lung Hospital, Hanoi, National Tuberculosis Control Programme, Hanoi, Vietnam,