1 Section of Dermatology, Department of Medical, Surgical and Neurological Science, S. Maria alle Scotte Hospital, University of Siena, Siena, Italy.
2 Unit of Dermatology, Section of Dermatology, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy - giuliatonini19@gmail.com.
3 Unit of Pathological Anatomy, Department of Medical, Surgical and Neurological Science, S. Maria alle Scotte Hospital, University of Siena, Siena, Italy.
4 Section of Dermatology, Department of Dermatology, Misericordia Hospital, Grosseto, Italy.