1. Department of Clinical Medicine and Immunological Sciences, Section of Dermatology, University of Siena, Siena, Italy,
2. Department of Clinical Medicine and Immunological Sciences, Section of Dermatology, University of Siena, Siena, Italy
3. Department of Clinical Medicine and Immunological Sciences, Section of Dermatology, University of Siena, Siena, Italy, University of Siena, Siena, Italy