1 Kheth'Impilo AIDS Free Living, Cape Town, South Africa Division of Epidemiology and Biostatistics, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa. geoffrey.fatti@khethimpilo.org.
2 Kheth'Impilo AIDS Free Living, Cape Town, South Africa. geoffrey.fatti@khethimpilo.org.