1 Section of Dermatology and Infectious Diseases, Department of Medical Sciences, University of Ferrara, Ferrara, Italy - czm@unife.it.
2 Section of Dermatology and Infectious Diseases, Department of Medical Sciences, University of Ferrara, Ferrara, Italy.
3 Section of Anatomic Pathology, Department of Morphology, Surgery and Experimental Medicine, S. Anna University Hospital, University of Ferrara, Ferrara, Italy.