1 Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Brescia 25123, Italy. Electronic address: alessandro.padovani@unibs.it.
2 Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Brescia 25123, Italy; Parkinson's Disease Rehabilitation Centre, FERB ONLUS, S Isidoro Hospital, Trescore Balneario, Bergamo, Italy.