1. Department of Biomedical and Biotechnological Sciences, University of Catania, I‑95124 Catania, Italy
2. Department of Clinical and Experimental Medicine, Unit of Infectious Diseases, University of Messina, I‑98122 Messina, Italy
3. Department of Clinical and Experimental Medicine, Unit of Infectious Diseases, ARNAS Garibaldi Hospital, University of Catania, I‑95122 Catania, Italy
4. Unit of Clinical Toxicology, Policlinico G. Rodolico, School of Medicine, University of Catania, I‑95123 Catania, Italy