1. Division of Allergy and Infectious Diseases University of Washington School of Medicine Seattle WA USA
2. Department of Epidemiology University of Washington School of Public Health Seattle WA USA
3. Botswana Harvard AIDS Institute Partnership Gaborone Botswana
4. Department of Clinical Research Faculty of Infectious and Tropical Diseases London School of Hygiene and Tropical Medicine London United Kingdom
5. Welcome Centre for Infectious Diseases Research in Africa Infectious Disease and Molecular Medicine Unit University of Cape Town Cape Town South Africa
6. Department of Global Health University of Washington Seattle WA USA