1 Department of Medical Sciences, Section of Dermatology and Infectious Diseases, University of Ferrara, Via L. Ariosto 35, 44121, Ferrara, Italy.
2 Department of Translational Medicine and for Romagna, Emilia-Romagna Cancer Registry, Functional Unit of Ferrara, Local Health Authority Ferrara, University of Ferrara, Ferrara, Italy.
3 Emilia-Romagna Cancer Registry, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Local Health Authority, Meldola, Forlì, Italy.
4 Department of Medical Sciences, Section of Dermatology and Infectious Diseases, University of Ferrara, Via L. Ariosto 35, 44121, Ferrara, Italy. natale.schettini@gmail.com.