[1] Meyer Childrens Univ Hosp, Pediat Hematol Oncol, Florence, Italy
[2] Univ Padua, Pediat Hematol Oncol, Padua, Italy
[3] Santobono Pausilipon Hosp, Pediat Hematol Oncol, Naples, Italy
[4] MBBM Fdn, S Gerardo Hosp, Pediat Hematol Oncol, Monza, Italy
[5] Univ Hosp Azienda Policlin Modena, Pediat Hematol Oncol, Modena, Italy