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Affiliations

• ¹ Department of Internal Medicine and Clinical Immunology, Sorbonne Université, Pitié-Salpêtrière University Hospital, Paris, France.
• ² Centre of Research in Myology, Association Institut de Myologie, UMRS974, Institut National de la Santé et de la Recherche Médicale, Paris, France.
• ³ Department of Internal Medicine, Claude Huriez Hospital, Univ. Lille, Lille cedex, France.
• ⁴ Department of Biostatistics, Univ. Lille, CHU Lille, EA 2694 - Santé Publique : Épidémiologie et Qualité des Soins, Lille, France.
• ⁵ Department of Rheumatology, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Sud, Le Kremlin-Bicêtre, France.