1. Wellcome Centre for Infectious Diseases Research in Africa, Institute for Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
2. Division of Infectious Diseases and HIV Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
3. Division of General Internal Medicine, Department of Medicine, Albert Einstein College of Medicine & Montefiore Medical Center, Bronx, NY, USA
4. Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
5. Department of Statistical Sciences, University of Cape Town, Cape Town, South Africa
6. Departments of Epidemiology & Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
7. Division of Infectious Diseases, Department of Medicine, Emory School of Medicine, Emory University, Atlanta, GA, USA
8. Department of Medicine, University of Cape Town, Cape Town, South Africa