1. Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 89, 95123 Catania, Italy
2. Department of Biological Effects of Natural and Synthetic Substances, Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str. Block 23, 1113 Sofia, Bulgaria
3. Department of Healthcare, South-West University “Neofit Rilski”, Ivan Mihailov Str. 66, 2700 Blagoevgrad, Bulgaria
4. Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy