[1] Azienda Osped Univ Bologna, IRCCS, Pediat Unit,Alma Mater Studiorum, Pediat Oncol & Hematol Unit Lalla Seragnoli, Bologna, Italy
[2] Azienda Osped Univ Bologna, IRCCS, Infect Dis Unit, Dept Med & Surg Sci,Alma Mater Studiorum, Bologna, Italy
[3] Azienda Osped Univ Bologna, IRCCS, Alma Mater Studiorum, Specialty Sch Pediat, Bologna, Italy