1. Division of Rheumatology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
2. Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Project Group Translational Medicine and Pharmacology TMP, Frankfurt am Main, Germany
3. Medizinische Klinik und Poliklinik 2, Department of Rheumatology and Clinical Immunology, University Hospital Würzburg, Würzburg, Germany
4. AbbVie Germany GmbH & Co. KG, Wiesbaden, Germany
5. Department of Biostatistics, GKM, Munich, Germany