1. Department of Hematology and Oncology, University Children's Hospital, Eberhard Karls University Tuebingen, Tuebingen, Germany
2. St Anna Children's Hospital and Children's Cancer Research Institute, Department of Studies and Statistics for Integrated Research and Projects, Medical University of Vienna, Vienna, Austria
3. Department of Pediatrics, Medical University of Vienna, Vienna, Austria
4. Department of Pediatric Hematology and Oncology, University Medicine Greifswald, Greifswald, Germany
5. Department for Studies and Statistics and Integrated Research, Children's Cancer Research Institute, Vienna, Austria
6. Division of Pediatric Hematology-Oncology, Department of Pediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
7. Division of Pediatric Stem Cell Therapy, Department of Pediatric Oncology, Hematology and Clinical Immunology, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
8. CCRI, Children's Cancer Research Institute, Vienna, Department of Tumor Biology and Department of Pediatrics, Medical University of Vienna, Vienna, Austria
9. Department of Pediatric Surgery and Pediatric Urology, University Children's Hospital, Eberhard Karls University Tuebingen, Tuebingen, Germany
10. Department for Diagnostic and Interventional Radiology, University Hospital, Eberhard Karls University Tuebingen, Tuebingen, Germany
11. Cluster of Excellence iFIT (Exc 2180) “Image-guided and Functionally Instructed Tumor Therapies,” University of Tuebingen, Germany
12. Children's Medical Research Institute, The Cancer Centre for Children, The Children's Hospital Westmead, University of Sydney, Sydney, Australia
13. Department of Pediatric Hematology, Oncology and Stem Cell Transplantation, Dr von Hauner Children's Hospital, University Hospital, Ludwig Maximilians University Munich, Munich, Germany
14. Department of Pediatric Oncology and Hematology, University Hospital, University of Cologne, Cologne, Germany
15. Department of Pediatric Oncology/Hematology, Charité-Universitaetsmedizin Berlin, Berlin, Germany
16. Department of Hematology and Oncology, Children's Hospital Stuttgart—Olgahospital, Stuttgart, Germany