1. “Giorgio Prodi” Cancer Research Center, University of Bologna, Bologna, Italy
2. Pediatric Hematology and Oncology Unit, S.Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
3. Unit of Molecular Bases of Genetic Risk and Genetic Testing, Department of Preventive and Predictive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
4. Soft Tissue and Bone Pathology, Histopathology, and Pediatric Pathology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
5. Pathology Unit, S.Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
6. Department of Pediatric Hematology and Oncology, Istituto G. Gaslini, Genova, Italy
7. Pediatric Hematology and Oncology Unit, A.R.N.A.S. Civico, Di Cristina and Benfratelli Hospital, Palermo, Italy
8. Pediatric Oncology Unit, Department of Hematology and Pediatric Onco-Hematology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy