1. Comprehensive Heart Failure Center Würzburg, University Hospital and University of Würzburg, Würzburg, Germany
2. Department of Internal Medicine I, Cardiology, University Hospital Würzburg, Würzburg, Germany
3. Medical Practice for Rheumatology and Nephrology, Erlangen, Germany
4. Department of Internal Medicine II, Rheumatology/Clinical Immunology, University Hospital of Würzburg, Würzburg, Germany
5. Clinic for Internal Medicine II, Rostock Clinic South, Rostock, Germany
6. Department of Internal Medicine II, Hospital Burghausen, Burghausen, Germany