1. Department of Pediatrics, University of Milano-Bicocca, Ospedale S. Gerardo, Monza, Italy,
2. Department of Paediatrics, University Medical Centre Schleswig-Holstein, Campus Kiel, Kiel, Germany,
3. Department of Clinical and Preventive Medicine, EsPhALL Trial Data Center, University of Milano-Bicocca, Monza, Italy,
4. University Hospital, Pediatric Hematology/Oncology, Lund, Sweden,
5. Pediatric Hematology Unit, San Gerardo Hospital, Monza, Italy,
6. Pediatric Hematology Oncology, CHU Hopital Sud, Rennes, France,
7. Erasmus MC-Sophia Childrens Hospital University Medical Center Rotterdam, Dutch Childhood Oncology Group, The Hague, Netherlands,
8. Department of Paediatric Haematology and Oncology, 2nd Faculty of Medicine, Charles University Prague, Prague, Czech Republic, 2nd Faculty of Medicine, Charles University Prague, Prague, Czech Republic,
9. University Medical Center Hamburg, Eppendorf, Germany,
10. Division of Pediatric Hematology-Oncology, Hospital Roberto del Río, University of Chile, Santiago, Chile,
11. Department of Paediatrics, Prince of Wales Hospital, Shatin, Hong Kong, China,
12. Dept. of Pediatric Hematology, The Children's Hospital, Sheffield, United Kingdom,
13. Uppsala University Hospital, Uppsala, Sweden,
14. Pediatric Hematology Oncology, Azienda Ospedaliero-Universitaria Meyer, Florence, Italy,
15. Oncogenetic Laboratory, Pediatric Hematology and Oncology, Justus-Liebig University, Giessen, Germany,
16. Children's Cancer Group, University of Manchester, Manchester, United Kingdom