1. Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.
2. Department of Surgery and Medical-Surgical Specialties, University of Catania, Catania, Italy.
3. Department of Neurology IC, Oasi Research Institute-IRCCS, Troina, Italy.
4. Department of Medical and Surgical Sciences and Advanced Technologies, Section of Neurosciences, University of Catania, Catania, Italy.