1 Leukaemia Research Cytogenetics Group, Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom.
2 Children's Cancer Research Institute, St Anna Kinderkrebsforschung, Vienna, Austria.
3 INSERM Unité Mixte de Recherché 1131, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris Sorbonne Cité, Paris, France.
4 Département de Génétique, Hôpital Robert Debré, Assistance Publique-Hôpitaux de Paris, Paris, France.
5 Department of Human Genetics, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands.
6 Department of Pediatric Oncology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands.
7 Department of Pediatrics, University Hospital Schleswig-Holstein, Kiel, Germany.
8 Childhood Leukaemia Investigation Prague, Department of Pediatric Hematology/Oncology, 2nd Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic.
9 Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Sydney, Australia.
10 Clinical Genetics Section, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
11 Department of Pediatric Hematology and Oncology, National Center for Child Health and Development, Tokyo, Japan.
12 Clinical Research Center, Nagoya Medical Center, National Hospital Organization, Aichi, Japan.
13 Division of Oncology and Hematology, Department of Pediatrics, Charité-Universitätsmedizin Berlin, Berlin, Germany.
14 Department of Hematology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium.
15 Pediatric Oncology, Children's Research Centre, University Children's Hospital Zürich, Zürich, Switzerland.
16 Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil.
17 Centro Ricerca Tettamanti, Clinica Pediatrica, Università di Milano-Bicocca, Monza, Italy.
18 Department of Pediatrics, Oncology, Hematology and Diabetology, Medical University of Lodz, Lodz, Poland.
19 German Cancer Consortium and German Cancer Research Center, Heidelberg, Germany.
20 Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
21 Department of Pediatric Hematology and Oncology, Medical School Hannover, Hannover, Germany.
22 Department of Pediatric Hematology and Oncology, St Anna Children's Hospital, Medical University of Vienna, Austria; and.
23 Dutch Childhood Oncology Group, The Hague, The Netherlands.