1Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Cape Town, South Africa
2Department of Medicine, University of Cape Town, Cape Town, South Africa
3Infectious Diseases Unit, GF Jooste Hospital, Cape Town, South Africa
4Centre for Infection, Department of Cellular and Molecular Medicine, St. George's University of London, London, United Kingdom
5Department of Epidemiology and Population, London School of Hygiene and Tropical Medicine, London, United Kingdom
6Department of Internal Medicine and Infectious Diseases, University Medical Centre Nijmegen, The Netherlands
Reprints or correspondence: Dr. Tihana Bicanic, Div. of Infectious Diseases, Dept. of Cellular and Molecular Medicine, St. George's Hospital Medical School, Cranmer Terrace, London SW17 ORE, United Kingdom ([email protected]).