1. Department of Cardiology, Odense University Hospital, Denmark
2. Department of Cardiology, Lillebaelt Hospital – Vejle, Denmark
3. Department of Cardiology, Esbjerg Hospital, Denmark
4. Institute of Regional Health Services Research, University of Southern Denmark, Odense, Denmark
5. Department of Cardiology, Aarhus University Hospital – Skejby, Denmark
6. Department of Cardiology, Svendborg Hospital, Denmark