1. School and Unit of Dermatology, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy;
2. Department of Clinical and Experimental Medicine, School and Unit of Allergy and Clinical Immunology, University of Messina, Messina, Italy;
3. Messina Unit, National Research Council of Italy (CNR), Institute of Applied Science and Intelligent System (ISASI), Messina, Italy