1. Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, DK Aarhus, Denmark
2. Department of Cardiology, Hospital Unit West, Herning, Denmark
3. Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
4. Department of Cardiology, Regional Hospital of Silkeborg, Silkeborg, Denmark