[1] Univ Hosp Padova, Citta Speranza, Pediat Res Inst, Pediat Oncohaematol Clin, Padua, Italy
[2] Univ Hosp Padova, Dept Mol Immunol & Oncol, Padua, Italy
[3] Univ Hosp Padova, Dept Pediat Surg, Padua, Italy
[4] Giannina Gaslini Childrens Hosp, Dept Pediat Hematol Oncol, Genoa, Italy
[5] IRCCS Ist G Gaslini, Dept Res & Diagnost, Genoa, Italy
[6] Univ Hosp Padova, Pediat Oncohaematol Clin, Padua, Italy
[7] Univ Hosp Padova, Dept Pathol, Padua, Italy