1. Pediatric Surgery Unit, Children's Hospital; Istituto Mediterraneo di Eccellenza Pediatrica; Palermo Italy
2. Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department; Fondazione IRCCS Policlinico S. Matteo; Pavia Italy
3. Molecular Pharmacology Unit, Department of Experimental Oncology and Molecular Medicine; Fondazione IRCCS Istituto Nazionale dei Tumori; Milano Italy
4. Institute of Pathologic Anatomy; University of Trieste; Trieste Italy
5. Hematology Department; Fondazione IRCCS Policlinico S. Matteo; Pavia Italy
6. Pediatric Unit, Department of Internal Medicine, University of Pavia and Department of Maternal and Children's Health; Fondazione IRCCS Policlinico San Matteo; Pavia Italy