1. Division of Infectious Diseases Geffen School of Medicine University of California Los Angeles Los Angeles California USA
2. Division of Epidemiology and Biostatistics School of Public Health University of Cape Town Cape Town South Africa
3. The Desmond Tutu Health Foundation University of Cape Town Cape Town South Africa
4. Division of Infectious Diseases School of Medicine University of Colorado‐Anschutz Medical Campus Aurora Colorado USA
5. Division of Clinical Pharmacology Department of Medicine University of Cape Town Cape Town South Africa
6. Centre for Infectious Disease Epidemiology and Research University of Cape Town Cape Town South Africa