1 Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, Dermatology Clinic, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy.
2 Unit of Pathology, Department of Molecular Medicine, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy.
3 Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, Dermatology Clinic, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy - v.brazzelli@smatteo.pv.it.