1 Department of Mental Health, AUSL Romagna, Ravenna, Italy.
2 School of Medicine and Surgery, University of Milano Bicocca, Milano, Italy.
3 Neurodegenerative Disease Unit, Department of Basic Medicine, Neuroscience, and Sense Organs, University of Bari Aldo Moro, Bari, Italy.
4 School of Physical and Occupational Therapy, McGill University, Montreal, Canada.
5 Unit of Epidemiological Research On Aging, National Institute of Gastroenterology 'Saverio de Bellis', Research Hospital, Castellana Grotte, Bari, Italy. f_panza@hotmail.com.