1. Oncology Department, Pediatric Hematology and Oncology Unit; A.R.N.A.S. Ospedali Civico, Di Cristina e Benfratelli; Palermo Italy
2. Hematology I, A.O. Villa Sofia-Cervello; Palermo Italy
3. Unit of Pathology; A.R.N.A.S. Ospedali Civico, Di Cristina e Benfratelli; Palermo Italy
4. Child Neurology and Psychiatric Unit; A.R.N.A.S. Ospedali Civico, Di Cristina e Benfratelli; Palermo Italy
5. Department of Radiology; A.R.N.A.S. Ospedali Civico, Di Cristina e Benfratelli; Palermo Italy
6. Department of Medicine-DIMED; University of Padua Medical School; Padua Italy
7. Clinic of Pediatric Hematology Oncology; Padua Hospital; Padua Italy