1. 1Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
2. 2Department of Hematology, Radboud University Medical Center, Nijmegen, The Netherlands
3. 3Department of Hematology, Leiden University Medical Center, Leiden, The Netherlands
4. 4Institute of Pathology and Neuropathology, Comprehensive Cancer Center, University Hospital Tübingen, Tübingen, Germany
5. 5Department of Hematology, Rijnstate Hospital, Arnhem, The Netherlands
6. 6Department of Hematology, University Medical Center Groningen, Groningen, The Netherlands
7. 7Department of Hematology, Jeroen Bosch Hospital, ‘s-Hertogenbosch, The Netherlands
8. 8Department of Hematology, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
9. 9Department of Internal Medicine, Gelderse Vallei Hospital, Ede, The Netherlands
10. 10Department of Hematology, Bernhoven Hospital, Uden, The Netherlands
11. 11Department of Internal Medicine, Slingeland Hospital, Doetinchem, The Netherlands
12. 12Department of Translational Immunology, German Cancer Research Center, Medical Hospital Tübingen, Tübingen, Germany
13. 13Department of Pathology, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
14. 14Department of Pediatrics, Oncology and Hematology, Medical University of Lodz, Lodz, Poland
15. 15Department of Pediatric Hematology and Oncology, University Hospital Brussels, Brussels, Belgium
16. 16Department of Pediatrics, Paola Children’s Hospital, Antwerp, Belgium
17. 17Pathology-DNA, Jeroen Bosch Hospital, ‘s-Hertogenbosch, The Netherlands
18. 18Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands
19. 19Pathology-DNA, Rijnstate Hospital, Arnhem, The Netherlands