1. From the Institute for Medical Informatics, Biometry and Epidemiology (B.H., S. Moebus, N.L., K.H.J.), West German Heart Center, Essen (S. Möhlenkamp, A. Schmermund, R.E.), and Department of Endocrinology (K.M.), University Hospital, University of Duisburg–Essen, Essen; Institute of Medical Epidemiology, Biometry and Informatics, Medical Faculty, Martin-Luther-University of Halle–Wittenberg, Halle (A. Stang); Institute of Medical Sociology, Medical Faculty, University of Düsseldorf, Düsseldorf (N...