1 Dermatology Unit, Department of Specialised, Experimental and Diagnostic Medicine, University of Bologna, Via Massarenti 1, 40138, Bologna, Italy. alessandropileri@hotmail.it.
2 University of Florence Medical School, Florence, Italy. alessandropileri@hotmail.it.
3 Dermatology Unit, Department of Specialised, Experimental and Diagnostic Medicine, University of Bologna, Via Massarenti 1, 40138, Bologna, Italy.
4 University of Turin, Turin, Italy.
5 University of Florence Medical School, Florence, Italy.