1. Department of Dermatology, Keck School of Medicine University of Southern California Los Angeles California USA
2. Lübeck Institute of Experimental Dermatology University of Lübeck Lübeck Germany
3. Unit of Dermatology and Skin Research Laboratory Galilee Medical Center Nahariya Israel
4. Department of Dermatology University Hospital Schleswig‐Holstein Lübeck Lübeck Germany