1. Institute of Dermatology, Department of Experimental and Clinical Medicine, University of Udine, San Michele Hospital, Piazza Rodolone 1, Gemona del Friuli, 33013 Udine, Italy
2. Institute of Anatomic Pathology, Department of Medical and Biological Sciences, University of Udine, University Hospital of Santa Maria della Misericordia, Piazzale Santa Maria della Misericordia 15, 33100 Udine, Italy
3. Institute of Dermatology and Venereology, University of Trieste, Maggiore Hospital, Piazza Ospedale 1, 34100 Trieste, Italy