1. Department of Cardiology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark
2. Duke Clinical Research Institute, Duke University, Durham, NC
3. National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
4. Emergency Medical Services, Copenhagen University, Copenhagen, Denmark
5. The Danish Heart Foundation, Copenhagen, Denmark
6. The Heart Centre, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
7. Department of Health, Science and Technology, Aalborg University, Aalborg, Denmark