1. Department of Dermatology University of Lübeck Lübeck Germany
2. Lübeck Institute of Experimental Dermatology University of Lübeck Lübeck Germany
3. Department of Pediatrics University of Lübeck Lübeck Germany
4. Department of Dermatology Universitätsklinikum Erlangen Friedrich‐Alexander‐Universität Erlangen‐Nürnberg (FAU) Deutsches Zentrum Immuntherapie (DZI) Erlangen Germany
5. Pediatric Rheumatology Department of Pediatrics and Adolescent Medicine University Hospital Erlangen Friedrich‐Alexander‐University Erlangen Germany