1. Department of Internal Medicine I, Division of Rheumatology and Clinical Immunology, University Medical Center of the Johannes Gutenberg University Mainz, Germany
2. Acura Rheumatology Center Rhineland Palatinate, Bad Kreuznach, Germany
3. Clinical Registry Unit, University Medical Center of the Johannes Gutenberg University Mainz, Germany
4. Tissue Bank and Institute of Pathology, University Medical Center of the Johannes Gutenberg University Mainz, Germany