1. Tumor Unit, Department of Traumatology and Orthopedic Surgery Hospital Sant Joan de Deu, Universitat De Barcelona Barcelona Spain
2. Pediatric Department of Traumatology and Orthopedic Surgery Hospital Sant Joan de Deu, Universitat De Barcelona Barcelona Spain
3. Department of Traumatology and Orthopedic Surgery University Hospital of Mutua Terrassa Barcelona Spain
4. Department of Diagnostic Imaging Hospital Sant Joan de Deu, Universitat De Barcelona Barcelona Spain
5. Department of Oncology and Hematology Hospital Sant Joan de Deu, Universitat De Barcelona Barcelona Spain
6. Department of Pathology Hospital Sant Joan de Déu, University of Barcelona Barcelona Spain