1. Department of Pediatric Oncology/Hematology; VU University Medical Center; Amsterdam The Netherlands
2. Dutch Childhood Oncology Group; The Hague The Netherlands
3. Princess Máxima Center for Pediatric Oncology; Utrecht The Netherlands
4. Laboratory of Experimental Cardiology; University Medical Center Utrecht; Utrecht The Netherlands
5. Department of Clinical Genetics; Erasmus University Medical Center/Dutch Working Group Hemato-oncological Genome Diagnostics; Rotterdam The Netherlands
6. Department of Pediatric Oncology/Hematology; Erasmus University Medical Center/Sophia Children's Hospital; Rotterdam The Netherlands