1. CNR Institute of Cellular Biology and Neurobiology, Monterotondo Scalo, Rome; Italy
2. Department of Neuroscience, Alzheimer's Disease Center, University and Hospital of Verona, Verona; Italy
3. Department of Biology and Biotechnology “Charles Darwin,” Sapienza University, Rome; Italy
4. Department of Biology and Biotechnology “Charles Darwin,” CNR Institute of Molecular Biology and Pathology, Sapienza University, Rome; Italy