1. Fondazione Policlinico Universitario A. Gemelli; Neurology Unit; Rome Italy
2. Sapienza University of Rome; Clinical Medicine and Public Health Unit; Policlinico Umberto I Viale Regina Elena 324 Rome Italy 00161
3. Fondazione Don Carlo Gnocchi; Milan Italy
4. Universita di Siena; Neurology Unit, Department of Neurosciences; Viale Bracci, 16 Siena Italy 53100
5. Universita Cattolica del Sacro Cuore; Institute of Neurology; Largo F. Vito n 1 00168 Rome Italy 00168