1. Department of Health Sciences, Section of Dermatology University of Florence Florence Italy
2. Dermatology Unit Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy
3. Department of Dermatology University of Lübeck Lübeck Germany
4. Lübeck Institute of Experimental Dermatology (LIED) University of Lübeck Lübeck Germany
5. Department of Dermatology, Hospital Clínic of Barcelona Universitat de Barcelona Barcelona Spain
6. Department of Pathophysiology and Transplantation Università degli Studi di Milano Milan Italy