1 Department of Neurology, Fondazione Policlinico Universitario A. Gemelli IRCSS, Largo A. Gemelli 8, 00168, Rome; Institute of Neurology, Catholic University of the Sacred Heart, Largo F. Vito 1, 00168, Rome.
2 Department of Neurology, Fondazione Policlinico Universitario A. Gemelli IRCSS, Largo A. Gemelli 8, 00168, Rome; Institute of Neurology, Catholic University of the Sacred Heart, Largo F. Vito 1, 00168, Rome. Electronic address: gabriella.silvestri@unicatt.it.