1. Section of Dermatology, Health Sciences Department University of Florence Florence Italy
2. Section of Dermatology, Department of Medical and Surgical Sciences University of Foggia Foggia Italy
3. Division of Dermatology U.O. Multizonale APSS Trento Italy
4. Dermatology Unit IRCCS Azienda Ospedaliero‐Universitaria di Bologna Bologna Italy
5. Dermatology Unit Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy
6. Unit of Dermatology, Department Medical Sciences and Public Health University of Cagliari Cagliari Italy
7. Department of Medicine and Surgery University of Perugia, Dermatology Clinic of Terni Terni Italy