1. Dermatology Clinic University of Trieste, Maggiore Hospital Trieste Italy
2. Department of Clinical and Experimental Medicine, Section of Dermatology University of Messina Messina Italy
3. Department of Biomedical Sciences and Human Oncology, Section of Dermatology University of Bari Bari Italy
4. Institute of Pathological Anatomy University of Trieste, Cattinara Hospital Trieste Italy