1. Institute of Epidemiology and Social Medicine (H.V., C.S.), University of Greifswald, D-17487 Greifswald, Germany
2. Departments of Gastroenterology, Endocrinology, and Nutrition (H.W.), University of Greifswald, D-17487 Greifswald, Germany
3. Departments of Cardiology (M.D.), University of Greifswald, D-17487 Greifswald, Germany