1. Unit of Experimental Therapy in Oncology; Istituto Giannina Gaslini; Genoa Italy
2. CHU Clermont-Ferrand; Service de Cytogénétique Médicale and Université Clermont Auvergne; Clermont-Ferrand France
3. Department of Pediatric Hematology/Oncology; Ghent University Hospital; Ghent Belgium
4. Department of Pediatric Hematology and Oncology; 2nd Medical Faculty Charles University and Faculty Hospital Motol; Prague Czech Republic
5. Department of Child and Adolescent Cancer; Institut Gustave Roussy; Villejuif France
6. Karolinska Institutet; Karolinska University Hospital; Stockholm Sweden
7. Oncología Pediátrica; Hospital Universitari i Politècnic La Fe; Valencia Spain
8. Department of Pediatric Oncology; Fondazione IRCCS Istituto Nazionale dei Tumori; Milan Italy
9. Department of Pediatric Oncology; CCRI/St. Anna Children's Hospital; Vienna Austria
10. Children's Cancer Research Group; Leeds Institute of Cancer and Pathology; Leeds United Kingdom