1. Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee;
2. Department of Microbiology, Faculty of Medicine, University Eduardo Mondlane, Maputo, Mozambique;
3. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee;
4. Central Hospital Quelimane, Quelimane, Mozambique;
5. General Hospital Mavalane, Maputo, Mozambique;
6. Vanderbilt Institute for Global Health, Vanderbilt University Medical Center, Nashville, Tennessee