1 Department of Pediatrics, University of Wisconsin-Madison, School of Medicine and Public Health, Madison, Wisconsin.
2 National TB Control Program, Mozambique Ministry of Health, Maputo, Mozambique.
3 Department of Pediatrics, University of California Los Angeles David Geffen School of Medicine, Maputo, Mozambique.
4 New York University Grossman School of Medicine, New York, New York.
5 Department of Paediatrics and Child Health, Desmond Tutu TB Centre, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa.