1. Section of Gerontology and Geriatrics, Department of Medicine, University of Perugia, Perugia, Italy
2. Aging Research Center, Karolinska Institutet-Stockholm University, Stockholm, Sweden
3. Department of Experimental Medicine - Section of Terni, University of Perugia, Italy
4. Department of Central Nervous System Research, Boehringer-Ingelheim Pharma GmbH & Co, Biberach an der Riss, Germany
5. Section of Neurology, Department of Experimental Biomedicine and Clinical Neuroscience, University of Palermo, Palermo, Italy