[1] Human Sci Res Council, Human & Social Dev Programme, 5th Floor,430 Peter Mokaba Ridge, Durban, South Africa
[2] Univ Witwatersrand, Fac Hlth Sci, Dept Paediat, WITS MRC Dev Pathways Hlth Res Unit, Johannesburg, South Africa
[3] Univ Witwatersrand, DST NRF Ctr Excellence Human Dev, 1 York Rd, Johannesburg, South Africa
[4] Human Sci Res Council, 5th Floor,Atrium 430 Peter Mokaba Ridge, Durban, South Africa
[5] Univ Oxford, Dept Psychiat, Oxford OX3 7JX, England
[6] Univ Witwatersrand, Fac Hlth Sci, Sch Publ Hlth, Wits MRC Rural Publ Hlth & Hlth Transit Res Unit, Johannesburg, South Africa
[7] Univ KwaZulu Natal, Sch Clin Med, Durban, South Africa
[8] Int Childrens Palliat Care Network, Assagay, KwaZulu Natal, South Africa