1. Department of Pediatrics and Epidemiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
2. Children’s Hospital of Philadelphia Global Health Center, Philadelphia, PA, USA
3. Botswana-UPenn Partnership, Gaborone, Botswana
4. Department of Psychology, University of Botswana, Gaborone, Botswana
5. Botswana-Baylor Children’s Clinical Centre of Excellence, Gaborone, Botswana
6. Departments of Medicine (Infectious Diseases) and Epidemiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA