1 Department of Rheumatology and Clinical Immunology, Charité, Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.
2 Division of Rheumatology and Systemic Inflammatory Diseases, III, Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
3 Department of Nephrology and Medical Intensive Care, Charité, Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Germany.
4 Deutsches Rheuma Forschungszentrum (DRFZ), an Institute of the Leibniz Association, Berlin, Germany.
5 Division of Rheumatology, Inflammation, Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
6 Department of Rheumatology, Clinical Immunology and Osteology, Immanuel Hospital Berlin-Wannsee Branch, Berlin, Germany.