1 Department of Medical and Surgical Sciences and Biotechnologies, Division of Dermatology 'Daniele Innocenzi', Sapienza University of Rome, Polo Pontino, Terracina, Italy.
2 Pathology Unit, IRCCS-Arcispedale Santa Maria Nuova, Reggio Emilia, Italy.
3 Dermatology and Skin Cancer Unit, 1st Medical Department, Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia, Italy.
4 Department of Anesthesiology, Surgery and Emergency, Second University of Naples, Naples, Italy.
5 Dermatology Unit, Second University of Naples, Naples, Italy. g.argenziano@gmail.com.