Division of Angiology, Swiss Cardiovascular Center, Inselspital, University of Bern, Bern, Switzerland. Electronic address: guenther.silbernagel@insel.ch. Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria. Mannheim Institute of Public Health, Social and Preventive Medicine, Mannheim Medical Faculty, University of Heidelberg, Mannheim, Germany; Institute of Public Health, Federal University of Bahia, Salvador, Brazil; BG Stats Consulting, Vienna, Austria. Division of Nephrology, Department of Internal Medicine 1, University of Würzburg, Würzburg, Germany; Comprehensive Heart Failure Centre, University of Würzburg, Würzburg, Germany. Institute of Public Health, Federal University of Bahia, Salvador, Brazil. Division of Angiology, Swiss Cardiovascular Center, Inselspital, University of Bern, Bern, Switzerland. Division of Nephrology, Department of Internal Medicine 1, University of Heidelberg, Heidelberg, Germany. Medical Clinic 5 (Nephrology, Hypertensiology, Endocrinology, Diabetology, and Rheumatology), Mannheim Medical Faculty, University of Heidelberg, Mannheim, Germany; Synlab Academy, Synlab Services GmbH, Mannheim, Germany.