1. Departments of Paediatrics and Child Health and Neurosurgery, Tygerberg Children's Hospital and Faculty of Health Sciences, Stellenbosch University, Tygerberg, South Africa, .
2. Department of Neurosurgery, Red Cross Children's Hospital, Cape Town, South Africa
3. Departments of Paediatrics and Child Health and Neurosurgery, Tygerberg Children's Hospital and Faculty of Health Sciences, Stellenbosch University, Tygerberg, South Africa
4. Department of Infectious Diseases, Groote Schuur Hospital, Cape Town, South Africa