1. Childhood Leukemia Investigation Prague (CLIP) and
2. Department of Pediatric Hematology and Oncology, Second Faculty of Medicine, Charles University, Prague, Czech Republic;
3. University Hospital Motol, Prague, Czech Republic;
4. Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Sydney, NSW, Australia;
5. Department of Pediatrics, University Medical Centre Schleswig-Holstein, Campus Kiel, Kiel, Germany;
6. Gennet, Center for Fetal Medicine and Reproductive Genetics, Prague, Czech Republic;
7. Institute of Hematology and Blood Transfusion, Prague, Czech Republic;
8. Blood and Marrow Transplant Services, Children’s Hospital at Westmead, Sydney, NSW, Australia; and
9. School of Women’s and Children’s Health, University of New South Wales, Sydney, NSW, Australia