[1] Univ Cape Town, Groote Schuur Hosp, Dept Med, Div Infect Dis & HIV Med, Cape Town, South Africa
[2] Amrita Vishwa Vidyapeetham, Amrita Inst Med Sci, Dept Infect Control & Epidemiol, Kochi, Kerala, India
[3] George Inst Global Hlth, Dept Hlth Syst & Equ, Hyderabad, India
[4] Univ Liverpool, Fac Hlth & Life Sci, Liverpool, England
[5] Univ Cape Town, Dept Med, Div Infect Dis & HIV Med, G26-68 Groote Schuur Hosp Observ, ZA-7925 Cape Town, South Africa