1. Department of Clinical Research , SOMA Istituto Osteopatia Milano , Milan , Italy
2. Department of Medical Sciences and Public Health , University of Cagliari , Cagliari , Italy
3. Division of Neurology and Neurorehabilitation , IRCCS Istituto Auxologico Italiano , Piancavallo-Verbania , Italy
4. Department of Neurosciences “Rita Levi Montalcini” , University of Turin , Turin , Italy