1 Section of Clinical, Allergological and Venereological Dermatology, Department of Medicine, University of Perugia, Perugia, Italy.
2 General and Oncologic Surgery Unit, Department of Surgical, Radiological and Odontostomatological Sciences, University of Perugia, Perugia, Italy.
3 Section of Clinical, Allergological and Venereological Dermatology, Department of Medicine, University of Perugia, Perugia, Italy - leonardo.bianchi@unipg.it.