1. BIOSS Centre for Biological Signalling Studies; and Department of Molecular Immunology, Institute of Biology III, Faculty of Biology; University of Freiburg, D-79104 Freiburg, Germany
2. Max Planck Institute of Immunobiology and Epigenetics, D-79108 Freiburg, Germany
3. Medical Department, Division of Rheumatology and Clinical Immunology, Charité University Medicine Berlin, D-10117 Berlin, Germany
4. Department of Rheumatology and Clinical Immunology, University Medical Center Freiburg, D-79106 Freiburg, Germany
5. German Rheumatism Research Centre, Leibniz Association, D-10117 Berlin, Germany