1. Department of Global Health and Social Medicine Harvard Medical School Boston Massachusetts USA
2. Faculty of Public Health Federal University of Sul e Sudeste do Pará Marabá Brazil
3. Desmond Tutu TB Centre, Department of Paediatrics and Child Health Stellenbosch University Cape Town South Africa
4. Department of Pediatrics Alpert Medical School of Brown University Providence Rhode Island USA
5. Center for International Health Research Rhode Island Hospital Providence Rhode Island USA