[1] Red Cross War Mem Childrens Hosp, Dept Paediat & Child Hlth, Western Cape, South Africa
[2] Univ Cape Town, ZA-7700 Rondebosch, South Africa
[3] Univ Cape Town, Inst Infect Dis & Mol Med, ZA-7700 Rondebosch, South Africa
[4] Univ Amsterdam, Acad Med Ctr, Ctr Trop Med & Travel Med, Div Internal Med, NL-1012 WX Amsterdam, Netherlands
[5] Univ Witwatersrand, Fac Hlth Sci, Dept Radiol, Johannesburg, South Africa
[6] World Federat Paediat Imaging, Outreach Comm, Cape Town, South Africa
[7] Schnetler Corbett & Partners Radiol, Cape Town, South Africa