1. Department of Paediatric Oncology, Bristol Royal Hospital for Children, Bristol, UK
2. Pediatric Oncology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
3. Department of Pediatric Oncology, Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
4. Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
5. Oncode Institute, Utrecht, The Netherlands
6. Predictive Medicine: Molecular Bases of Genetic Risk and Genetic Testing Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
7. Pediatric Hematology/Oncology, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
8. Department of Pediatric Hematology and Oncology, Rigshospitalet, Copenhagen, Denmark