1. The Copenhagen City Heart Study, Copenhagen University Hospital Frederiksberg, Nordre Fasanvej 57, Frederiksberg, Denmark
2. Department of Cardiology, Copenhagen University Hospital Hvidovre, Kettegård Alle 30, Hvidovre, Denmark
3. National Institute of Public Health, University of Southern Denmark, Studiestræde 6, Copenhagen, Denmark
4. Section of Cardiology, Department of Medicine, Holbæk Hospital, Smedelundsgade 60, Holbæk, Denmark