[1] S Maria Scotte Univ Hosp Siena, Dept Oncol, Siena, Italy
[2] Careggi Univ Hosp Florence, Med Oncol Unit 2, Florence, Italy
[3] S Maria Scotte Univ Hosp Siena, Dept Mol Biol, Microbiol Sect, Siena, Italy
[4] Dept Oncol, Rome, Italy
[5] Univ Cagliari, Dept Oncol, Cagliari, Italy
[6] Magna Graecia Univ Catanzaro, Catanzaro, Italy
[7] Tommaso Campanella Canc Ctr Catanzaro, Med Oncol Unit, Catanzaro, Italy