1. Department of Dermatology University Medical Center GroningenUniversity of Groningen Groningen the Netherlands
2. Department of Experimental Dermatology and Allergology University of Oldenburg Oldenburg Germany
3. Department of Pathology University Medical Center GroningenUniversity of Groningen Groningen the Netherlands
4. Molecular and Cell Biology Laboratory Istituto Dermopatico dell'ImmacolataIDI‐IRCCS Rome Italy