1. Department of Medicine, Section of Hematology/Oncology, University of Chicago, Chicago, IL
2. Department of Pediatrics, University of Chicago, Chicago, IL
3. Grupo de América Latina de Oncología Pediátrica (GALOP), Hospital Luis Calvo Mackenna, National Pediatric Cancer Program (PINDA), Santiago, Chile
4. National Unit of Pediatric Oncology, Francisco Marroquin University School of Medicine, Guatemala City, Guatemala
5. Pediatric Hematology and Oncology, Mohammed V University of Rabat, Rabat, Morocco
6. Faculty of Health Sciences, Division of Pediatric Haematology and Oncology, Department of Pediatrics and Child Health, University of the Witwatersrand, Charlotte Maxeke Johannesburg Academic Hospital, Johannesburg, South Africa
7. Department of Pediatrics, King Faisal Specialist Hospital and Research Center, Al Madinah, Saudi Arabia
8. Bombay Hospital Institute of Medical Sciences and SRCC Children's Hospital, Mumbai, India
9. Children's Cancer Centre, Royal Children's Hospital, Melbourne, Australia
10. Cancer Research UK Clinical Trials Unit, National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Cancer and Genomic Sciences, Birmingham, United Kingdom
11. Dana-Farber Cancer Institute, Boston, MA
12. UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
13. Ion Beam Therapy Center, SAGA HIMAT Foundation, Saga, Japan
14. Department of Global Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN