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South African Medical Journal
(2011)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4538692/
Uys P, Marais BJ, Johnstone-Robertson S, Hargrove JW, Wood R
Clinical Infectious Diseases
https://doi.org/10.1093/cid/cir229
Johnstone-Robertson S, Hargrove JW, Williams BG
HIV/AIDS - Research And Palliative Care 3
https://doi.org/10.2147/HIV.S7278
Wood R, Johnstone-Robertson S, Uys PW, Hargrove JW, Middelkoop K, Lawn SD, Bekker LG
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https://doi.org/10.1086/655129