[1] Univ Cape Town, Red Cross Childrens Hosp, Sch Child & Adolescent Hlth, Dept Pediat Neurol, ZA-7700 Cape Town, South Africa
[2] Univ Ghana, Sch Med, Neurol Serv, Dept Child Hlth, Accra, Ghana
[3] Ahmadu Bello Univ, Teaching Hosp, Dept Pediat, Zaria, Nigeria
[4] Ahmadu Bello Univ, Teaching Hosp, Pediat Neurol Clin, Zaria, Nigeria
[5] Queen Elizabeth Cent Hosp, Blantyre, Malawi
[6] Makere Univ, Dept Pediat & Child Hlth, Mulago Hosp, Coll Hlth Sci, Kampala, Uganda
[7] Univ Orange Free State, Dept Paediat & Child Hlth, Bloemfontein, South Africa
[8] Kenya Govt Med Res Ctr, Ctr Geog Med Res Coast, Kilifi, Kenya
[9] Wellcome Trust Res Programme, Kilifi, Kenya
[10] UCL Inst Child Hlth, Neurosci Unit, London, England