1. Section of Biology and Genetics, Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
2. Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy
3. Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy