1. Section of Dermatology, Department of Medical and Surgical Sciences University of Foggia Foggia Italy
2. 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
3. Section of Dermatology, Department of Health Sciences University of Genoa, IRCCS ‐ Ospedale Policlinico San Martino Genoa Italy