1 Section of Dermatology - Department of Health Sciences, University of Genoa, IRCCS - Ospedale Policlinico San Martino, Genoa, Italy.
2 Section of Dermatology - Department of Health Sciences, University of Genoa, IRCCS - Ospedale Policlinico San Martino, Genoa, Italy. emanuele.cozzani@unige.it.
3 Unit of Pathology, IRCCS- Ospedale Policlinico San Martino, Genoa, Italy.