[1] FIRC Inst Mol Oncol, I-50134 Florence, Italy
[2] Univ Insubria, Dipartimento Biol Strutturale & Funz, I-21052 Busto Arsizio, Italy
[3] European Inst Oncol, I-20141 Milan, Italy
[4] Ist Super Sanita, Comparat Toxicol & Ecotoxicol Lab, I-00161 Rome, Italy
[5] Natl Inst Radiol Sci, Div Biol & Oncol, Inage Ku, Chiba 2638555, Japan
[6] Univ Milan, Dipartimento Med Chirurg & Odontoiatria, I-20122 Milan, Italy