1. Princess Máxima Center for Pediatric Oncology Utrecht The Netherlands
2. Department of Human Genetics Hannover Medical School Hannover Germany
3. Department of Human Genetics, Radboud Institute for Molecular Life Sciences Radboud University Medical Center Nijmegen The Netherlands
4. Department of Oncology and Children's Research Centre University Children's Hospital Zurich Zurich Switzerland
5. Pediatric Hematology‐Oncology, Schneider Children's Medical Center and Sackler Faculty of Medicine Tel Aviv University Tel Aviv Israel
6. Centro Ricerca Tettamanti, Fondazione Tettamanti University of Milan Bicocca Monza Italy
7. Pediatric Oncology/Hematology Charité ‐ Universitätsmedizin Berlin Berlin Germany
8. Leukemia and Other Pediatric Hemopathies, Developmental Tumor Biology Group Institut de Recerca Sant Joan de Déu Barcelona Spain
9. Hematology Laboratory Hospital Sant Joan de Deu Barcelona Barcelona Spain
10. Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER) Instituto de Salud Carlos III Madrid Spain
11. Molecular Diagnostics, Children's Cancer Institute University of New South Wales Sydney New South Wales Australia
12. Department of Genetics, Robert Debré Hospital Assistance Publique‐Hôpitaux de Paris (AP‐HP) Paris France
13. INSERM U1131, Saint‐Louis Research Institute University of Paris Paris France
14. Wolfson Childhood Cancer Centre, Translational and Clinical Research Institute Newcastle University Newcastle upon Tyne UK
15. Dutch Childhood Oncology Group Utrecht The Netherlands
16. Department of Genetics University Medical Center Utrecht Utrecht The Netherlands