1. Department of Public Health, University of Copenhagen, Copenhagen, Denmark
2. Copenhagen Stress Research Center, Copenhagen, Denmark
3. Finnish Institute of Occupational Health, Helsinki, Finland
4. Department of Psychology, University of Turku, Finland
5. Private Practice, Copenhagen, Denmark
6. The Copenhagen City Heart Study, Frederiksberg Hospital, Copenhagen, Denmark
7. Section of Respiratory Medicine, Hvidovre Hospital, Copenhagen, Denmark
8. Department of Cardiology, Bispebjerg University Hospital, Copenhagen, Denmark