[1] South African Med Res Council, Hlth Syst Res Unit, Tygerberg, South Africa
[2] Univ KwaZulu Natal, Ctr Rural Hlth, Sch Nursing & Publ Hlth, Durban, South Africa
[3] Kings Coll London, Inst Psychiat Psychol & Neurosci, London, England
[4] Western Cape Govt, Policy & Res Directorate, Dept Community Safety, Cape Town, South Africa
[5] Univ Cape Town, Div Social & Behav Sci, Sch Publ Hlth & Family Med, Rondebosch, South Africa
[6] Reg Psychosocial Support Initiat REPSSI, Randburg, South Africa
[7] Univ Oxford, Dept Social Policy & Intervent, Oxford, England
[8] Dept Med Educ, Brighton, E Sussex, England
[9] Sussex Med Sch, Brighton, E Sussex, England