1. Unit of Infectious Diseases, Department of Clinical and Experimental Medicine University of Catania Catania Italy
2. Department of Biomedical and Dental Sciences and Morpho Functional Imaging University of Messina Messina Italy
3. Unit of Infectious Diseases, Department of Clinical and Experimental Medicine University of Messina Messina Italy
4. Department of Adult and Childhood Human Pathology “Gaetano Barresi” University of Messina Messina Italy