[1] Great Ormond Street Hospital for Children,Department of Paediatric Oncology
[2] Hospital Universitario Niño Jesus,Department of Paediatric Haematology and Oncology
[3] Cliniques Universitaires Saint-Luc,Pediatric and AYA Oncology Unit
[4] Université Catholique de Louvain,Department of Paediatric Oncology
[5] Centre Oscar-Lambret,Oncology Unit
[6] Royal Aberdeen Children’s Hospital,Pediatrics III, Pediatric Hematology/Oncology
[7] Istituto Giannina Gaslini,Pediatric Hemato
[8] University Hospital Essen,Oncology Department
[9] Hospital Universitario La Paz,Pediatric Oncology
[10] Jagiellonian University Medical College,Hematology Department, Institute of Pediatrics
[11] Princess Máxima Center for Pediatric Oncology,Department of Solid Tumors
[12] University Medical Center Utrecht,Division Cancer and Imaging