1. Department of Cardiology and Endocrinology, Slagelse Hospital, Region Zealand, Denmark
2. Institute of Regional Health Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
3. Department of Medical Physics and Engineering, Leeds Teaching Hospitals NHS Trust, Leeds, U.K.
4. Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, U.K.
5. Department of Cardiology, Copenhagen University Hospital Herlev-Gentofte, Capital Region of Denmark, Denmark
6. Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark