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.