1. From the Department of Internal Medicine I, University Hospital Aachen, Germany (M.B., N.M, K.A.S.)
2. Vth Department of Medicine (Nephrology, Hypertensiology, Rheumatology, Endocrinology, Diabetology), Medical Faculty Mannheim, University of Heidelberg, Germany (M.E.K., G.E.D., W.M.)
3. Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University Graz, Austria (W.M., M.A.)
4. SYNLAB Academy, SYNLAB Holding Deutschland GmbH, Mannheim and Augsburg, Germany (W.M.)
5. Center of Hemostasis and Thrombosis Zurich, Switzerland (P.H.).