[1] Univ Florence, Dept Expt & Clin Biomed Sci, Radiotherapy Unit, I-50134 Florence, Italy
[2] Univ Roma La Sapienza, Dept Expt Med, I-00161 Rome, Italy
[3] RestorGenex Pharmaceut Inc, Jamaica Plain, MA 02130 USA
[4] Univ Aquila, Dept Appl Clin & Biotechnol Sci, Radiobiol Lab, I-67100 Laquila, Italy
[5] Univ Aquila, Dept Appl Clin & Biotechnol Sci, Div Radiotherapy, I-67100 Laquila, Italy