1. Pediatric Surgery UnitDepartment of Women's and Children's HealthUniversity Hospital of Padua Padua Italy
2. Department of Pediatric SurgeryGiannina Gaslini Children's Hospital Genoa Italy
3. Department of Hematology/OncologyIRCCS Istituto Nazionale dei Tumori Milan Italy
4. Department of OncohematologyBambino Gesù Children's HospitalIRCCS Rome Italy
5. Department of Pediatric SurgeryBambino Gesù Children's HospitalIRCCS Rome Italy
6. Hematology/Oncology UnitARNAS Civico Di Cristina e Benfratelli Palermo Italy
7. Department of PathologyBambino Gesù Children's HospitalIRCCS Rome Italy
8. Scientific DirectionVeneto Institute of Oncology IRCCS Padua Italy
9. Department of MedicineDIMEDUniversity of Padua Padua Italy
10. Hematology/Oncology UnitDepartment of Women's and Children's HealthUniversity‐Hospital of Padua Padua Italy