1. Department of Dermatology Venereology and Allergology Division of Allergology and Immunology Charité – Universitätsmedizin Berlin corporate member of Free University of Berlin Humboldt University of Berlin and Berlin Institute of Health
2. Department of Dermatology Venereology and Allergology Division of Evidence‐Based Medicine Charité – Universitätsmedizin Berlin corporate member of Free University of Berlin Humboldt University of Berlin and Berlin Institute of Health
3. Department of Dermatology and Venereology Vivantes Klinikum Neukölln Berlin
4. Clinic and Functional Division for Rheumatology University Hospital Düsseldorf Düsseldorf
5. Hamburg Center for Pediatric and Adolescent Rheumatology Hamburg
6. Department of Dermatology University Hospital Carl Gustav Carus Dresden, and Technical University of Dresden Dresden
7. III. Medical Clinic and Polyclinic, Section Rheumatology University Hospital Hambug‐Eppendorf Hamburg
8. Dermatology Venereology and Allergology Helios St. Elisabeth Hospital Oberhausen, and University of Witten‐Herdecke Oberhausen
9. Department of Rheumatology and Clinical Immunology Kerckhoff Hospital GmbH Bad Nauheim
10. Department of Dermatology Venereology and Allergology University Hospital Frankfurt, Frankfurt am Main
11. Dermatological Department University Hospital Erlangen Erlangen
12. Department of Pediatrics and Adolescent Medicine University Hospital RWTH Aachen Aachen
13. Dermatological Department University Hospital Bonn Bonn
14. Medical Director Hospital Passau Passau, University of Münster, Münster, Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Center, Amsterdam, Niederlande