1. Department of Rheumatology and Clinical Immunology; Charité-University Medicine Berlin; Germany
2. German Rheumatism Research Center (DRFZ); a Leibniz Institute, Autoimmunology Group; Berlin Germany
3. German Rheumatism Research Center (DRFZ); a Leibniz Institute, Epidemiology Group; Berlin Germany
4. Medical Clinic I; University Hospital Schleswig-Holstein; Campus Kiel Germany
5. German Rheumatism Research Center (DRFZ); a Leibniz Institute, Cell Biology Group; Berlin Germany