1. a Department of Neuroscience , University of Parma , Parma, Italy
2. b Outpatient Clinic for the Diagnosis and Therapy of Cognitive Disorders, AUSL , Parma, Italy
3. c Department of Medicine , Division of Neurology, Baycrest , Toronto, Canada
4. d Mt. Sinai Hospital , Toronto, Canada
5. e Rotman Research Institute, Baycrest , Toronto, Canada
6. f Department of Medicine (Neurology) , University of Toronto , Toronto, Canada
7. g S. Orsola Malpighi Hospital, Division of Neurology , Bologna, Italy
8. h Department of Neuroscience , University of Sheffield , Sheffield, UK
9. i S. Camillo Hospital, IRCCS , Venice, Italy