1. University of Tennessee Health Sciences Center; Memphis Tennessee
2. Haematology-Oncology Service; Red Cross Children's Hospital; Department of Paediatrics and Child Health; University of Cape Town; Cape Town South Africa
3. Hematology/Oncology/SCT; Center for Global Health, Children, Children's Hospital Colorado; University of Colorado; Aurora Colorado
4. Department of Paediatric Oncology; VU University Medical Centre; Amsterdam The Netherlands
5. CONICET, Buenos Aires, Argentina
6. Pediatric Hemato-Oncology; Hospitals JP Garrahan and Austral, Buenos Aires, Argentina
7. Hemato-Oncology Service, Hospital Sant Joan de Déu, Universitat de Barcelona, Barcelona, Spain
8. Department of Oncology; St. Jude Children's Research Hospital; Memphis Tennessee
9. Department of Pediatrics and the Center for Childhood Cancer Research; Children's Hospital of Philadelphia; and The Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania
10. Paediatric Neuro-Oncology and Paediatric Oncology; Sir James Spence Institute of Child Health; Royal Victoria Infirmary; Newcastle upon Tyne United Kingdom
11. Department of Medical Oncology; Max Super-Specialty Hospital; New Delhi India
12. Real Oncopediatría; Real Hospital Português; Recife Brazil
13. Department of Hematology; Hôpital 20 août; Casablanca Morocco