1. Dermatology Unit, Department of Medicine (DIMED), University of Padua, 35121 Padua, Italy
2. Dermatology Unit, Department of Integrated Medical and General Activity, University of Verona, 37100 Verona, Italy
3. Dermatology Unit, University of Magna Graecia, 88100 Catanzaro, Italy
4. Department of Dermatology, Ospedale San Bortolo, 36100 Vicenza, Italy
5. Centro Studi Gruppo Italiano Studi Epidemiologici in Dermatologia (GISED), 24121 Bergamo, Italy
6. Pediatric Dermatology Department of Women’s and Child’s Health (SDB), University of Padua, 35121 Padua, Italy