1. Mosaiques Diagnostics GmbH, Hannover, Germany
2. Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
3. Division of Nephrology and KfH Renal Unit, Hospital St. Georg, Leipzig, Germany
4. Department of Internal Medicine 2 (Nephrology, Rheumatology, Endocrinology), Martin-Luther-University Halle, Wittenberg, Germany