1. Department of Paediatric Pneumonology and Immunology, Charité, Universitätsmedizin Berlin, Berlin, Germany; Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Health Sciences, Stellenbosch University, Cape Town, South Africa
2. Endocrine Unit, Department of Paediatrics and Child Health, Faculty of Health Sciences, Stellenbosch University, Cape Town, South Africa
3. Brooklyn Hospital for Chest Diseases, Cape Town, South Africa
4. Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Health Sciences, Stellenbosch University, Cape Town, South Africa