1. Princess Máxima Center for Pediatric Oncology Utrechtthe Netherlands
2. Department of Pediatric Oncology/Hematology Erasmus MC‐Sophia Children’s Hospital Rotterdam the Netherlands
3. Division of Pediatric Hematology Oncology CHC‐Clinique du MontLégia ‐ Liège Liège Belgium
4. Department of Pediatrics Stanford School of Medicine Stanford CAUSA
5. Stanford Cancer InstituteStanford School of Medicine Stanford CA USA
6. Department of Oncology and Hematology CHU de Nantes Nantes France
7. Department of Oncology and Hematology Children’s HospitalCHRU Nancy Vandoeuvre Lès Nancy France
8. Pediatric Hematology –Oncology Schneider Children's Medical Center of Israel Sackler Faculty of Medicine Tel Aviv University Tel Aviv Israel
9. Cancer Centre for Children The Children’s Hospital at Westmead Westmead Australia
10. Pediatric Hematology and Stem Cell Transplantation Department Central Hospital of Southern Pest – National Institute of Hematology and Infectious Diseases Budapest Hungary
11. Department of Paediatrics The Chinese University of Hong Kong Hong Kong SAR China
12. Department of Pediatric Hematology and Oncology Research National Research Institute for Child Health and Development Tokyo Japan
13. R.M. Gorbacheva Memorial Institute of Children Oncology, Hematology and Transplantation Pavlov University Saint‐Petersburg Russia
14. Department of Pediatrics and Adolescent Medicine Rigshospitalet Copenhagen University Hospital; Institute of Clinical MedicineFaculty of Health, University of Copenhagen Copenhagen Denmark
15. Department Oncology University Children's Hospital Zürich Zürich Switzerland
16. Division of Oncology, Cancer and Blood Diseases Institute Cincinnati Children’s Hospital Medical Center; Department of PediatricsUniversity of Cincinnati College of Medicine Cincinnati OH USA