1. Department of Haematology; Erasmus University Medical Centre; Rotterdam the Netherlands
2. Department of Paediatric Oncology-Haematology; Erasmus University Medical Centre/Sophia Children's Hospital; Rotterdam the Netherlands
3. Dutch Childhood Oncology Group (DCOG/SKION); The Hague the Netherlands
4. Department of Clinical Genetics; Erasmus University Medical Centre; Rotterdam the Netherlands
5. Dutch Working Group on Haemato-Oncologic Genome Diagnostics; Rotterdam the Netherlands
6. Department of Paediatric Haematology-Oncology and Stem Cell Transplantation; Ghent University Hospital; Ghent Belgium
7. St Anna Children's Hospital and Children's Cancer Research Institute; Department of Paediatrics; Medical University of Vienna; Vienna Austria
8. Princess Màxima Centre for Paediatric Oncology (PMC); Utrecht the Netherlands