Clinical research Prevention and epidemiology Residence close to high traffic and prevalence of coronary heart disease

1 Institute for Medical Informatics, Biometry and Epidemiology, University Hospital, University of Duisburg-Essen, Hufelandstr. 55, 45122 Essen, Germany; 2 Institute of Medical Epidemiology, Biometry and Informatics, Medical Faculty, Martin-Luther-University of Halle-Wittenberg, Halle, Germany; 3 Institute of Medical Sociology, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany; West German Heart Center Essen, University Hospital, University of Duisburg-Essen, Essen, Germany; Rhenish Institute for Environmental Research at the University of Cologne, Cologne, Germany; and Department of Endocrinology, University Hospital, University of Duisburg-Essen, Essen, Germany