1. Department of Dermatology Venereology and Allergology St. Josef Hospital University Medical Center of the Ruhr University Bochum Bochum Germany
2. Department of Dermatology University Hospital Carl Gustav Carus Technical University Dresden Dresden Germany
3. Department of Dermatology University Hospital Münster Münster Germany
4. Paul‐Ehrlich‐Institut Federal Institute for Vaccines and Biomedicines Langen Germany
5. Department of Dermatology RWTH Aachen University Aachen Germany
6. Department of Pediatrics Hallerwiese Cnopfsche Kinderklinik Nuremberg Germany
7. Dermatology Office Dr. Strömer Ahaus Germany
8. Department of Dermatology Allergology and Venereology Hannover Medical School Hannover Germany
9. Department of Dermatology Venereology and Allergology Charité – Universitätsmedizin Berlin Berlin Germany
10. Center of IVDK University Medical Center Göttingen Göttingen Germany