Gerardo Caruso is Neurosurgeon at the Department of Neurosciences, School of Medicine, Neurosurgical Clinic, University of Messina, Italy.Lucia Merlo is Neurosurgeon at the Department of Neurosciences, School of Medicine, Neurosurgical Clinic, University of Messina, Italy.Maria Caffo is Assistant Professor in Neurosurgery, Ph.D in Neurooncology at the Department of Neurosciences, School of Medicine, Neurosurgical Clinic, University of Messina, Italy.