1. Division of Clinical Pharmacology, Department of Medicine University of Cape Town
2. Wellcome Centre for Infectious Diseases Research in Africa (CIDRI‐Africa), Institute of Infectious Disease and Molecular Medicine University of Cape Town Cape Town
3. Department of Pharmacology and Therapeutics University of Liverpool UK
4. HIV Prevention Research Unit, South African Medical Research Council KwaZulu‐Natal South Africa
5. CAPRISA‐MRC HIV‐TB Pathogenesis and Treatment Research Unit University of KwaZulu‐Natal South Africa