1. Division of Hematology, Fondazione IRCCS Policlinico San Matteo University of Pavia, Pavia, Italy;
2. Service of Biometry and Clinical Epidemiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy;
3. Division of Radiotherapy, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy;
4. Department of Biology and Biotechnology, Laboratory of Neuro Radio Experimental Biology, University of Pavia, Pavia, Italy