1. Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
2. Wellcome Centre for Infectious Diseases Research in Africa, University of Cape Town, Cape Town, South Africa
3. Health Impact Assessment, Provincial Government of the Western Cape, Cape Town, South Africa
4. Division of Public Health Medicine, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
5. Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
6. Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa