1. Department of Clinical and Experimental Medicine, University of Messina, Italy
2. Cutroni-Zodda Hospital Neurology Unit, Barcellona PG, Messina, Italy
3. Mental Health Research Center at Eastern State Hospital, Lexington, KY, USA and Psychiatry and Biomedical Research Centre in Mental Health Net (CIBERSAM), Santiago Apostol Hospital, University of the Basque Country, Vitoria, Spain