[1] National Health Laboratory Service (NHLS),Centre for HIV and Sexually Transmitted Infections, National Institute for Communicable Diseases (NICD)
[2] Western Sydney Sexual Health Centre,Marie Bashir Institute for Infectious Diseases and Biosecurity & Sydney Medical School, Westmead
[3] Western Sydney Local Health District,Division of Infectious Diseases and HIV Medicine, Department of Medicine
[4] University of Sydney,Division of Epidemiology & Biostatistics, School of Public & Family Medicine
[5] Anova Health Institute,Department of Clinical Microbiology & Infectious Diseases, Faculty of Health Sciences
[6] University of Cape Town,undefined
[7] University of Cape Town,undefined
[8] University of the Witwatersrand,undefined