1. Paediatric Haematology and Oncology and NHL‐BFM Study Centre University Medical Centre Hamburg‐Eppendorf Hamburg Germany
2. Paediatric Haematology and Oncology and CoALL Study Centre University Medical Centre Hamburg‐Eppendorf Hamburg Germany
3. Department of Pathology, Haematopathology Section and Lymph Node Registry University Hospital Schleswig‐Holstein Kiel Germany
4. Department of Pathology University of Wuerzburg Wuerzburg Germany
5. Department of Pathology and Molecular Medicine, 2nd Faculty of Medicine Charles University Prague and University Hospital in Motol Prague Czech Republic
6. Department of Pathology, 3rd Faculty of Medicine Charles University Prague and University Hospital Kralovske Vinohrady Prague Czech Republic
7. Department of Pathology Medical University of Vienna Vienna Austria
8. Institute of Human Genetics Ulm University & Ulm University Medical Centre Ulm Germany
9. Department of Paediatric Haematology and Oncology Hannover Medical School, and NHL‐BFM Study Centre Hannover Germany
10. Bioinformatics Core University Medical Centre Hamburg‐Eppendorf Hamburg Germany
11. Leibniz Institute of Virology (LIV) Hamburg Germany
12. Division of Paediatric Haematology/Oncology Children's Hospital of Eastern Switzerland St. Gallen Switzerland
13. Faculty of Health Science and Medicine University of Lucerne Lucerne Switzerland
14. Department of Paediatrics McMaster Children's Hospital and McMaster University Hamilton Ontario Canada
15. Mildred Scheel Cancer Career Centre HaTriCS4 University Medical Centre Hamburg‐ Eppendorf Hamburg Germany
16. Department of Paediatric Haematology and Oncology St. Anna Children's Hospital, Medical University of Vienna Vienna Austria
17. St. Anna Children's Cancer Research Institute Vienna Austria
18. Department of Pediatric Hematology and Oncology Charles University Prague and University Hospital Motol Prague Czech Republic