1. Department of Biomedical and Biotechnological Science, University of Catania, 95124 Catania, Italy
2. Laboratory of Clinical Virology, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
3. Unit of Oncologic Diseases, ASP‑Catania, 95100 Catania, Italy
4. Research Unit of the Catania Section of the Italian League Against Cancer, 95122 Catania, Italy
5. Department of Clinical and Experimental Medicine, Section of Dermatology, University of Messina, 98122 Messina, Italy