1 Department of Medical Sciences, Section of Dermatology and Infectious Diseases, University of Ferrara, Ferrara, Italy.
2 Section of Anatomic Pathology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara and S. Anna University Hospital, Ferrara, Italy.
3 Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Local Health Authority Ferrara, Ferrara, Italy.