 Author information
1Department of Dermatology, Medical University of Vienna, Vienna, Austria.
2Department of Dermatology and Venereology, University Hospital of Cologne, Cologne, Germany.
3Department of Dermatology and Venereology, University Hospital of Cologne, Cologne, Germany.
4Department of Dermatology, Venereology and Allergology, HELIOS St. Elisabeth Klinik Oberhausen, University Witten-Herdecke, Oberhausen, Germany.
5Department of Dermatology, Venereology and Allergology, Kantonsspital St. Gallen, St. Gallen, Switzerland.
6Service de Médecine Interne, Centre de référence maladies rares: vascularites et sclérodermie systémique, Hôpital Cochin, Assistance Publique Hôpitaux de Paris, Paris, France.
7Research Laboratories and Academic Division of Clinical Rheumatology, IRCCS San Martino, University Medical School of Genoa, Genoa, Italy.
8Dermatology Unit, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.
9Division of Medicine, Centre for Rheumatology, University College London, London, UK.
10Department of Dermatology, Medical University of Warsaw, Warsaw, Poland.
11Dermatology Unit, Hospital of Lecco, Lecco, Italy.
12Department of Rheumatology, Ghent University Hospital, Ghent, Belgium.
13Department of Clinical and Molecular Science, Università Politecnica delle Marche, Ancona, Italy.
14Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria.
15Department of Dermatology, Hôpital Saint-Louis, Hôpitaux Universitaires, Paris, France.
16Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary.
17Department of Dermatology, Hôpital Saint-Louis, Hôpitaux Universitaires, Paris, France.
18Department of Dermatology, University Hospital of Aarhus, Aarhus, Denmark.
19Hamburg Centre for Pediatric and Adolescent Rheumatology, Schön Klinik Hamburg Eilbek, Hamburg, Germany.
20Department of Dermatology and Allergology, Hôpital Tenon, Assistance Publique Hôpitaux de Paris, Université Pierre et Marie Curie, Paris, France.
21Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology, Medical University of Vienna, Vienna, Austria.
22Department of Dermatology, Medical University of Vienna, Vienna, Austria.
23Department of Dermatology and Venereology, Turku University Hospital and University of Turku, Turku, Finland.
24Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary.
25Department of Dermato-Allergology, Herlev and Gentofte University Hospital, Copenhagen, Denmark.
26Department of Dermatology, Venereology and Pediatric Dermatology, Medical University of Lublin, Lublin, Poland.
27Department of Dermatology, Medical University of Warsaw, Warsaw, Poland.
28Department of Dermatology, Connective Tissue Diseases Service, Royal Free Hospital, London, UK.
29Department of Dermatology, Allergology and Venereology, University of Helsinki, and Skin and Allergy Hospital, Helsinki University Central Hospital, Helsinki, Finland.
30Department of Dermatology, IRCCS San Martino, University Medical School of Genoa, Genoa, Italy.
31Department of Dermatology, Hôpital Saint-Louis, Hôpitaux Universitaires, Paris, France.
32Department of Medical Sciences, University of Turin, Turin, Italy.
33Department of Dermatology, Allergology and Venereology, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
34Department of Dermatology, Hospital del Mar-Parc de Salut Mar, Universitat Autònoma de Barcelona, Barcelona, Spain.
35Department of Dermatology and Pediatric Dermatology, National Centre for Rare Skin Disorders, Hôpital Saint-Andre, University of Bordeaux, Bordeaux, France.
36Department of Dermatology, Medical University of Warsaw, Warsaw, Poland.
37Department of Dermatology, University Hospital of Erlangen, Erlangen, Germany.
38Department of Dermatology and Venereology, University Hospital Halle, Halle (Saale), Germany.
39Department of Dermatology and Pediatric Dermatology, National Centre for Rare Skin Disorders, Hôpital Saint-Andre, University of Bordeaux, Bordeaux, France.
40Department of Dermatology, Medical University of Vienna, Vienna, Austria.
41Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria.
42Department of Dermatology, Venereology and Allergology, University Hospital Charité - Universitätsmedizin Berlin, Berlin, Germany.
43Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria.
44Department of Dermatology and Venereology, University Hospital of Cologne, Cologne, Germany.
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