1. Department of Neurosciences–Neurosurgery, University of Rome La Sapienza, Rome, Italy
2. Department of Neurosurgery, University of Perugia, IRCCS Neuromed, Pozzilli, Italy
3. Department of Neurosurgery, IRCCS Neuromed, Pozzilli, Italy
4. Department of Neurosciences– Neurosurgery, University of Rome La Sapienza, Rome, Italy