[1] Univ Athens, Sch Med, Med Oncol, Athens, Greece
[2] Azienda Osped Perugia, Med Oncol, Santa Maria Misericordia Hosp, Perugia, Italy
[3] Humanitas Clin & Res Ctr, Div Hematol & Oncol, Milan, Italy
[4] Azienda Osped Perugia, Santa Maria Misericordia Hosp, Perugia, Italy
[5] Regina Elena Inst Canc Res, Biostat & Data Management Core, Rome, Italy
[6] Univ Perugia, Dept Expt Med, Pathol Anat & Histol Unit, Perugia, Italy
[7] Univ Perugia, Dept Diagnost Imaging, Perugia, Italy