1. Department of Pediatrics I, Pediatric Hematology/Oncology, ALL-BFM Study Group, Christian Albrechts University Kiel and University Hospital Schleswig-Holstein, Campus Kiel, Germany
2. Pediatric Hematology-Oncology Unit, Department of Pediatrics, University of Milano-Bicocca, MBBM Foundation, Monza, Italy
3. Department of Pediatric Hematology and Oncology, St. Anna Children’s Hospital, Medical University of Vienna, Austria
4. St. Anna Kinderspital and Children’s Cancer Research Institute, Vienna, Austria
5. Department of Pediatric Hematology/Oncology, Hannover Medical School, Hannover, Germany
6. Department of Paediatric Hematology and Oncology, University Hospital Muenster, Germany
7. University Children’s Hospital, Zurich, Switzerland
8. Division of Pediatric Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Germany
9. Department of Pediatric Oncology, Hematology and Immunology, University of Heidelberg, Germany
10. Bicocca Center of Bioinformatics, Biostatistics and Bioimaging, School of Medicine and Surgery, University of Milan-Bicocca, Monza, Italy
11. Pediatric Hematology and Oncology, Charité Medical Center, Humboldt University, Berlin, Germany