1. Departments of Cardiology; Rigshospitalet; Copenhagen Denmark
2. Frederiksberg University Hospital; Frederiksberg Denmark
3. Odense University Hospital; Odense Denmark
4. Departments of Medicine Esbjerg Central Hospital; Esbjerg Denmark
5. Skive Hospital; Skive Denmark
6. Fredericia Hospital; Fredericia Denmark
7. Holbaek Central Hospital; Holbaek Denmark
8. Slagelse Central Hospital; Slagelse Denmark
9. Horsens Hospital; Horsens Denmark
10. Roskilde County Hospital; Roskilde Denmark