1. Abbott Fund Children's Clinical Centre of Excellence, Baylor College of Medicine, Lilongwe, Malawi; Baylor College of Medicine International Pediatric AIDS Initiative, Houston, Texas, USA; Department of Pediatrics, Denver Health/University of Colorado, Denver, Colorado, USA
2. Fogarty International, Bethesda, Maryland, USA; University of North Carolina Project–Malawi, Lilongwe, Malawi; Department of Pediatrics, Division of Infectious Diseases, University of Colorado, Denver, Colorado, USA
3. Abbott Fund Children's Clinical Centre of Excellence, Baylor College of Medicine, Lilongwe, Malawi
4. Abbott Fund Children's Clinical Centre of Excellence, Baylor College of Medicine, Lilongwe, Malawi; Baylor College of Medicine International Pediatric AIDS Initiative, Houston, Texas, USA
5. University of North Carolina Project–Malawi, Lilongwe, Malawi