1. Center for Research and Treatment on Cognitive Dysfunctions, Biomedical and Clinical Sciences Department, “Luigi Sacco” Hospital, University of Milan, Italy
2. National Centre of Epidemiology, National Institute of Health, Rome, Italy
3. Department of Pathophysiology and Transplantation, University of Milan, Fondazione Cà Granda, IRCCS Ospedale Policlinico, Milan, Italy