1 Department of Internal Medicine III, Jena University Hospital - Friedrich Schiller University Jena, Germany. alexander.pfeil@med.uni-jena.de.
2 Department of Internal Medicine I, Jena University Hospital - Friedrich Schiller University Jena, Germany.
3 Department of Internal Medicine III, Jena University Hospital - Friedrich Schiller University Jena, Germany.
4 Department of Rheumatology, Immunology, Osteology and Physical Medicine, Campus Kerckhoff, Justus-Liebig University Gießen, Bad Nauheim, Germany.
5 Section Rheumatology, Sozialstiftung Bamberg, and Department of Internal Medicine 3, Rheumatology and Immunology, University Hospital Erlangen, Germany.
6 Department of Internal Medicine 3, Rheumatology and Immunology, and German Center Immune Therapy, University Hospital Erlangen, Germany.