[1] Ifakara Hlth Inst, Intervent & Clin Trials, Morogoro, Tanzania
[2] Nelson Mandela African Inst Sci & Technol, Tengeru, Arusha, Tanzania
[3] St Francis Referral Hosp, Chron Dis Clin Ifakara, Morogoro, Tanzania
[4] Ifakara Hlth Inst, Environm Hlth & Ecol Sci, Dar Es Salaam, Tanzania
[5] Univ Hosp Basel, Div Infect Dis & Hosp Epidemiol, CH-4031 Basel, Switzerland
[6] Univ Basel, CH-4002 Basel, Switzerland
[7] Swiss Trop & Publ Hlth Inst, CH-4123 Allschwil, Switzerland
[8] Ifakara Hlth Inst, Hlth Syst Impact Evaluat & Policy, Dar Es Salaam, Tanzania