[1] Univ Pavia, Dept Nucl & Theoret Phys, I-27100 Pavia, Italy
[2] Ist Nazl Fis Nucl, Milan, Italy
[3] Ohio State Univ, Dept Pathol, Columbus, OH 43210 USA
[4] Canc Ctr Excellence, Dept Surg Oncol, Catanzaro, Italy
[5] Univ Pavia, Dept Surg, I-27100 Pavia, Italy