1. Ludwigshafen Risk and Cardiovascular Health Study Nonprofit LLC, Freiburg, Germany
2. Division of Endocrinology, Diabetology, Nephrology, Vascular Disease, and Clinical Chemistry, Department of Internal Medicine, Eberhard-Karls-University Tübingen, Tübingen, Germany
3. Synlab Center of Laboratory Diagnostics Heidelberg, Heidelberg, Germany
4. Mannheim Institute of Public Health, Social and Preventive Medicine, Mannheim Medical Faculty, University of Heidelberg, Mannheim, Germany
5. Cardiology Group Frankfurt-Sachsenhausen, Frankfurt, Germany
6. Division of Endocrinology, Department of Internal Medicine, Ulm University, Ulm, Germany
7. Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria