1. University Hospital Vall d'Hebron Barcelona Spain
2. Children's Hospital Los Angeles University of Southern California Los Angeles California
3. Clinical Trials and Biostatistics Unit Veneto Oncologic Institute IOV‐IRCCS Padua Italy
4. University of Florida Gainesville Florida
5. Princess Maxima Center for Pediatric Oncology Utrecht The Netherlands
6. East Carolina University Greenville North Carolina
7. SIREDO Oncology Center Institut Curie PSL University Paris France
8. Children Hospital for Wales Cardiff and Vale University Health Board Cardiff UK
9. Stanford University School of Medicine Stanford California
10. Gustave Roussy University Paris‐Saclay Villejuif France
11. Memorial Sloan Kettering Cancer Center New York New York
12. Padova University Hospital Padua Italy
13. The Royal Marsden NHS Foundation Trust Sutton UK
14. Texas Children's Hospital Baylor College of Medicine Houston Texas
15. Seattle Children's Hospital Fred Hutchinson Cancer Research Center University of Washington Seattle Washington