1. Dermatology Unit, Department of Medical, Surgical and Neurological Sciences University of Siena Siena Italy
2. Institute of Dermatology Catholic University of the Sacred Heart Rome Italy
3. Department of Medical Sciences, Surgery and Neurosciences, Research Center of Systemic Autoinflammatory Diseases and Behçet's Disease Clinic University of Siena Siena Italy
4. Azienda Ospedaliero‐Universitaria Senese [European Reference Network (ERN) for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases (RITA) Center] Siena Siena Italy
5. Dermatology Unit Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy
6. Department of Pathophysiology and Transplantation Università degli Studi di Milano Milan Italy
7. Section of Dermatology, Department of Health Sciences University of Florence Florence Italy