1 Unit of Dermatology, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy.
2 Unit of Dermatology, Department of Medical and Oncology Area, University of Pisa, Pisa, Italy cri.fidanzi@outlook.it.
3 Unit of Dermatology, Hospital of Carrara, Carrara, Italy.
4 Unit of Dermatology, Department of Medical and Oncology Area, University of Pisa, Pisa, Italy.
5 Liver Unit, Department of Medical and Surgical Sciences, C.U.R.E. (University Centre for Liver Disease Research and Treatment), University of Foggia, Foggia, Italy.
6 Section of Dermatology, DISSAL, University of Genoa, IRCCS Ospedale Policlinico San Martino, Genova, Italy.