1. Department of Pathology, IUCT-Oncopole, CHU of Toulouse and University of Toulouse, Pharmacology and Structural Biology Institute, Toulouse, France
2. Biostatistics Unit, Claudius Regaud Institut, IUCT-Oncopole, Toulouse, France
3. Department of Pathology, CHU la Timone, Marseille, France
4. Department of Pathology, CHRU Lille, Lille, France
5. Department of Pathology, Curie Institut, Paris, France
6. Department of Pathology, CHU Nancy, Nancy, France
7. AP-HP, Hôpital Cochin, Service de Pathologie and Université Paris Descartes, Paris, France
8. Pediatric Oncology Department, Hautepierre, Strasbourg, France
9. Department of Pathology, CHU Tours, Tours, France
10. INSERM UMR1238, Université de Nantes, Nantes, France
11. Department of Children and Adolescents Oncology, Gustave Roussy Cancer Campus, Villejuif, France
12. Medical School of Rangueil, University Paul Sabatier, Toulouse, France
13. Department of Pediatric Orthopedic Surgery, Necker Hospital, Paris, France
14. Department of Orthopedic Surgery, CHU Nantes, Nantes, France
15. Unicancer, Paris, France
16. Biostatistics Unit, Gustave Roussy Cancer Campus, Villejuif, France
17. Department of Medical Oncology, Curie Institut, Paris, France