1. Great North Children's Hospital and Newcastle University, Newcastle upon Tyne, United Kingdom
2. Haematology Oncology Service, Red Cross War Memorial Children's Hospital, Department of Paediatrics and Child Health, University of Cape Town, Cape Town, South Africa
3. Department of Radiation Oncology, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa
4. Neuro-oncology Program, Division of Haematology/Oncology, The Hospital for Sick Children, Toronto, ON, Canada
5. Department of Neurosurgery, Red Cross War Memorial Children's Hospital and University of Cape Town, Cape Town, South Africa
6. Department of Pathology, ACTREC and Tata Memorial Hospital, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
7. Department of Pediatric Oncology, Tata Memorial Hospital, Parel, Mumbai, India
8. Pediatric Oncology Department—Instituto Nacional de Enfermedades Neoplásicas, Surquillo, Peru
9. Instituto Nacional de Enfermedades Neoplásicas, Lima, Perú and Facultad de Ciencias de la Salud de La Universidad de Huánuco, Huánuco, Peru
10. Department of Hematology and Oncology, King Hussein Cancer Centre, Amman, Jordan
11. Department of Pediatric and Adolescent Oncology, Institut Gustave-Roussy, Villejuif, France
12. Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Newcastle upon Tyne, United Kingdom