1. Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
2. Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town Cape Town, South Africa
3. Vanderbilt Institute for Global Health, Vanderbilt University, Nashville, TN, USA
4. Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, USA
5. Vanderbilt University Department of Medicine, Division of Infectious Diseases, Nashville, TN, USA