1. Department of Medicine-DIMED, General Pathology & Cytopathology Unit, University of Padova, Padova, Italy
2. Pathology Unit, ARNAS Civico, Di Cristina and Benfratelli Hospital, Palermo, Italy
3. Pathology Department, “San Bortolo” Hospital, Vicenza, Italy
4. Pediatric Hematology and Oncology Unit, ARNAS Civico, Di Cristina and Benfratelli Hospital, Palermo, Italy