1. Institute of Dermatology Università Cattolica del Sacro Cuore Rome Italy
2. Fondazione Policlinico Universitario “A. Gemelli” IRCCS Rome Italy
3. Department of Dermatology and Allergology Philipps University Marburg Germany
4. Institute of Hematology Università Cattolica del Sacro Cuore Rome Italy
5. IDI‐IRCCS Rome Italy