1. Department of Pathophysiology and Transplantation, University of Milan , Milan , Italy
2. Dermatology Unit, IRCCS Foundation Maggiore Policlinico Hospital , Lombardia, Milan , Italy
3. Department of Medical Surgical and Health Sciences, University of Trieste , Trieste, Friuli-Venezia Giulia , Italy
4. San Raffaele Hospital , Milan , Italy
5. Pathology Unit, Humanitas University , Rozzano, Milan , Italy