1. University of Catania; Department GF Ingrassia, Section of Neurosciences; Catania Italy 95123
2. Policlinico Universitario G. Martino Messina; Department of Neurological Sciences; Via Consolare Valeria Messina Italy 90100
3. Fondazione IRCCS, Istituto Neurologico Carlo Besta; Scientific Direction; via Celoria, 11 Milan Italy 20133
4. Terni University Hospital; Department of Neurology; Terni Italy 05100