1 Section of Neurosurgery, Department of Experimental Biomedicine and Clinical Neurosciences (BIONEC), University of Palermo, Palermo, Italy.
2 Department of Neurology and Psychiatry, Neurosurgery, "Sapienza" University of Rome, Rome, Italy.
3 Section of Neurosurgery, Department of Experimental Biomedicine and Clinical Neurosciences (BIONEC), University of Palermo, Palermo, Italy. Electronic address: [email protected].