1. Department of Sciences; Roma Tre University; Roma Italy
2. National Institute of Nuclear Physics, Roma Tre Section; Rome Italy
3. D'Urso & Fanali S.r.l.; Gallarate Varese Italy
4. Department of Science and High Technology; University of Insubria; Busto Arsizio Varese Italy
5. Neuroscience Research Center; University of Insubria; Busto Arsizio Varese Italy
6. Interdepartmental Laboratory for Electron Microscopy; Roma Tre University; Roma Italy