1. Department of Life, Health and Environmental Sciences, University of L’Aquila, L’Aquila, Italy
2. Department of Surgery, Operative Unit of Neurosurgery, San Salvatore Hospital, L’Aquila, Italy
3. Sbarro Institute for Cancer Research and Molecular Medicine and Center for Biotechnology, Temple University, Philadelphia, PA, USA
4. National Institute for Nuclear Physics (INFN), Gran Sasso National Laboratory (LNGS), Assergi, Italy
5. Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy