1. Dermatology Unit IRCCS Azienda Ospedaliero‐Universitaria di Bologna, Policlinico S. Orsola‐Malpighi Bologna Italy
2. Department of Medical and Surgical Sciences Alma Mater Studiorum University of Bologna Bologna Italy
3. Dermatology Unit, Department of Clinical Internal, Anesthesiologic and Cardiovascular Sciences Sapienza University of Rome Rome Italy