1. Division of Clinical Pharmacology, Department of Medicine; University of Cape Town; Cape Town South Africa
2. Division of Dermatology, Department of Medicine; University of Cape Town; Cape Town South Africa
3. School of Public Health and Family Medicine; University of Cape Town; Cape Town South Africa
4. Health Impact Assessment Directorate, Department of Health; Provincial Government of the Western Cape; Cape Town South Africa
5. Institute of Infectious Diseases and Molecular Medicine; University of Cape Town; Cape Town South Africa