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.