1. Department of Radiation Oncology; Groote Schuur Hospital and University of Cape Town; Cape Town South Africa
2. Haematology Oncology Service; Red Cross War Memorial Children's Hospital; Department of Paediatrics and Child Health; University of Cape Town; South Africa
3. Cure Children's Hospital; Mbale Uganda
4. Paediatric Department; College of Medicine; Blantyre Malawi
5. Department of Paediatric Oncology; Emma Children's Hospital; Academic Medical Centre Amsterdam the Netherlands
6. Department of Oncology; St. Jude Children's Research Hospital and International Outreach Programme; Memphis Tennessee
7. Department of Neurosurgery; Red Cross War Memorial Children's Hospital and University of Cape Town; Cape Town South Africa
8. Division of Hematology, Oncology, SCT and Cancer Biology; Department of Pediatrics; Stanford University; Palo Alto California
9. Department of Radiology; Royal Victoria Infirmary; Newcastle upon Tyne United Kingdom
10. Hospital for Sick Children; University of Toronto; Toronto Canada
11. Great North Children's Hospital; Newcastle upon Tyne; United Kingdom