1 Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, Denmark.
2 Psychiatric Center Copenhagen, Denmark; and Institute of Clinical Medicine, University of Copenhagen, Denmark.
3 Department of Cardiology, Bispebjerg and Frederiksberg Hospital, Denmark.
4 Department of Public Health, Aarhus University, Denmark and Aalborg University Hospital, Denmark.
5 Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, Denmark; and Department of Public Health, Section of Epidemiology, University of Copenhagen, Denmark. Email: mariekwa@yahoo.dk.