[1] G Gaslini Childrens Hosp, Infect Dis Unit, I-16147 Genoa, Italy
[2] Univ Genoa, Genoa, Italy
[3] Natl Inst Canc Res, Genoa, Italy
[4] G Gaslini Childrens Hosp, Unit Bone Marrow Transplant, Genoa, Italy
[5] G Gaslini Childrens Hosp, Unit Haematol, Genoa, Italy
[6] G Gaslini Childrens Hosp, Surg Unit, Genoa, Italy
[7] G Gaslini Childrens Hosp, Serv Radiol, Genoa, Italy