[1] Natl Canc Inst IRCCS, Dept Med Oncol, I-33081 Aviano, PN, Italy
[2] Natl Canc Inst IRCCS, Dept Pathol, I-33081 Aviano, PN, Italy
[3] Natl Canc Inst IRCCS, Clin Unit Trials Off, Sci Directorate, I-33081 Aviano, PN, Italy
[4] Gen Hosp Pordenone, Dept Pathol, Pordenone, Italy