1. 1Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, University of Freiburg, Freiburg, Germany
2. 2partner site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany
3. 3Department of Internal Medicine I, University Hospital Carl Gustav Carus, Dresden, Germany
4. 4Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
5. 5Department of Human Genetics, Hannover Medical School, Hannover, Germany
6. 6Institute of Pathology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
7. 7Institute of Pathology Kaufbeuren-Ravensburg, Kaufbeuren, Germany
8. 8Department of Pediatric Hematology-Oncology and Stem Cell Transplantation, Ghent University Hospital, Ghent, BEL
9. 9Department of Pediatrics, Aarhus University Hospital Skejby, Aarhus, Denmark
10. 10Pediatric Oncology and Hematology "Lalla Seràgnoli", IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
11. 11Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
12. 12Dept. of Paediatric Haematology and Oncology, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
13. 13Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN
14. 14Institute of Medical Bioinformatics and Systems Medicine, Faculty of Medicine, University of Freiburg, Freiburg, Germany
15. 15Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
16. 16German Cancer Research Center (DKFZ), Heidelberg, Germany