1. Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
2. Section of Paediatric Infectious Diseases, Department of Infectious Diseases, Imperial College London, London, UK
3. ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic - Universitat De Barcelona, Barcelona, Spain