1 Department of Life Sciences and Biotechnologies, Section of Medicines and Health Products, University of Ferrara, Ferrara, Italy.
2 Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, Ferrara, Italy.
3 Department of Medicine Surgery and Dentistry "Scuola Medica Salernitana", Neuroscience Section, University of Salerno, Fisciano, Italy.
4 Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy.
5 IRCCS San Raffaele, Rome, Italy.
6 Department of Clinical Neurosciences, Parkinson and Movement Disorders Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
7 Neurologic Unit, AOU "Policlinico-San Marco", Department of Medical, Surgical Sciences and Advanced Technologies, GF Ingrassia, University of Catania, Catania, Italy.
8 Parkinson's Disease and Movement Disorders Unit, IRCCS Mondino Foundation, Pavia, Italy.
9 IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurology Unit, Milan, Italy.
10 IRCCS San Raffaele Scientific Institute, Neurology Unit, Milan, Italy.
11 Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy.
12 IRCCS Istituto Delle Scienze Neurologiche di Bologna, Bologna, Italy.
13 University San Raffaele, Roma, Italy.
14 Department of Medicine Surgery and Dentistry "Scuola Medica Salernitana", Neuroscience Section, University of Salerno, Fisciano, Italy. mpellecchia@unisa.it.