1. Erasmus MC-Sophia Children's Hospital; Pediatric Oncology/Hematology; Rotterdam The Netherlands
2. Princess Máxima Center for Pediatric Oncology; Utrecht The Netherlands
3. Pediatric Immunology; Hemato-Oncology and Stem Cell Transplantation, Leiden University Medical Center; Leiden The Netherlands
4. Dutch Childhood Oncology Group (DCOG); The Hague the Netherlands
5. Pediatric Oncology, VU University Medical Center; Amsterdam The Netherlands
6. Clinical Genetics; Erasmus MC; Rotterdam The Netherlands
7. Dutch Working Group on Hemato-Oncologic Genome Diagnostics; Rotterdam The Netherlands