1. German Diabetes Clinic, German Diabetes Center, Leibniz Institute at Heinrich-Heine University, Düsseldorf, Germany
2. Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Institute at Heinrich-Heine University, Düsseldorf, Germany
3. Department of Internal Medicine II–Cardiology, Medical Center, University of Ulm, Ulm, Germany
4. Institute of Epidemiology, GSF–National Research Center for Environment and Health, Neuherberg, Germany
5. Institute of Health Economics and Health Care Management, GSF–National Research Center for Environment and Health, Neuherberg, Germany