University of California, San Francisco (UCSF) - Department of Epidemiology and Biostatistics, University of California, San Francisco (UCSF) - Department of Epidemiology and Biostatistics, University of North Carolina (UNC) at Chapel Hill - Department of Geography, University of Washington - Department of Epidemiology, University of California, Los Angeles (UCLA) - Jonathan and Karin Fielding School of Public Health, University of California, San Francisco (UCSF) - F. I. Proctor Foundation, Democratic Republic of Congo, Democratic Republic of Congo - Ministry of Health, Democratic Republic of Congo, University of California, San Francisco (UCSF) - Department of Epidemiology and Biostatistics, University of California, San Francisco (UCSF) - Department of Epidemiology and Biostatistics, Democratic Republic of Congo - Ministry of Health, University of California, Los Angeles (UCLA) - Department of Epidemiology, University of California, San Francisco (UCSF) - Department of Epidemiology and Biostatistics and Harvard University - Harvard Medical School