1. Sydney Infectious Diseases Institute, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
2. School of Medical Sciences and Charles Perkins Centre, The University of Sydney, Camperdown, NSW 2050, Australia
3. Department of Respiratory Medicine, The Children’s Hospital at Westmead, Westmead, NSW 2145, Australia
4. Tuberculosis Research Program, Centenary Institute, Camperdown, NSW 2050, Australia
5. Department of Paediatrics and Child Health, Faculty of Health Science, University of Cape Town, Cape Town 7700, South Africa
6. Red Cross War Memorial Children’s Hospital, South Africa, Rondebosch, Cape Town 7700, South Africa
7. Department of Infectious Diseases, The Children’s Hospital at Westmead, Westmead, NSW 2145, Australia
8. Discipline of Paediatrics and Child Health, University of Sydney, Camperdown, NSW 2050, Australia
9. Children’s Health and Environment Program, Child Health Research Centre, University of Queensland, St Lucia, QLD 4072, Australia