1. Centre for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden;
2. Childhood Cancer Research Unit, Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden;
3. Division of Pediatrics, and
4. Clinical Genetics Unit, Department of Molecular Medicine and Surgery, and Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden;
5. Division of Molecular Hematology, Institution for Laboratory Medicine, Lund University, Lund, Sweden;
6. Department of Pediatric Oncology and Hematology, Skåne University Hospital, Lund, Sweden;
7. PEDEGO Research Unit and Medical Research Center Oulu, University of Oulu, Oulu, Finland;
8. Department of Clinical Genetics, Oulu University Hospital, Oulu, Finland;
9. Broegelmann Research Laboratory, Department of Clinical Sciences, University of Bergen, Bergen, Norway;
10. Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland;
11. Department of Neurology, Lund University, Lund, Sweden;
12. Department of Human Genetics, Hannover Medical School, Hannover, Germany;
13. Department of Clinical Chemistry, Oulu University Hospital, Oulu, Finland;
14. Department of Clinical Genetics, Lund University, Lund, Sweden;
15. Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden;
16. Department of Hematology, Linköping University Hospital, Linköping, Sweden; and
17. Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden