1. Centre for Infectious Disease Epidemiology and Research School of Public Health and Family Medicine University of Cape Town Cape Town South Africa
2. HIV/AIDS Department and Global Hepatitis Programme World Health Organization Geneva Switzerland
3. Médecins Sans Frontières Southern African Medical Unit Cape Town South Africa
4. Department of Health Provincial Government of the Western Cape Cape Town South Africa
5. Wellcome Centre for Infectious Diseases Research in Africa Institute of Infectious Disease and Molecular Medicine University of Cape Town Cape Town South Africa