1. Klinikum der Landeshauptstadt Stuttgart gKAäR, Olgahospital, Stuttgart Cancer Center Zentrum für Kinder‐, Jugend‐ und Frauenmedizin, Pädiatrie 5 (Pädiatrische Onkologie, Hämatologie, Immunologie) Stuttgart Germany
2. Division of Pediatric Hematology and Oncology, Department of Women's and Children's Health University of Padua Padua Italy
3. Department of Pediatric Surgery University Children's Hospital Marburg Germany
4. Department of Pediatrics, Hematology and Oncology Medical University of Gdansk Gdańsk Poland
5. Pediatric Hematology‐Oncology Unit Kaplan Medical Center Rehovot Israel
6. Pediatric Oncology Unit Aglaia Kyriakou Children's Hospital Athens Greece
7. Pediatric Oncology and Hematology Unit Cruces University Hospital Barakaldo Spain
8. Department of Pediatric Hematology and Oncology University Children's Hospital Tuebingen Germany
9. Pediatric Oncology Unit Fondazione IRCCS Istituto Nazionale dei Tumori Milan Italy
10. SIREDO Oncology Center (Care, Innovation and Research for Children, Adolescents and Young Adults with Cancer), Institut Curie Université PSL Paris France