1. Brigham and Women's Hospital Heart & Vascular Center Harvard Medical School Boston MA USA
2. Department of Cardiology North Zealand Hospital Hillerød Denmark
3. Department of Internal Medicine Yale New Haven Hospital, Yale University School of Medicine New Haven CT USA
4. Department of Cardiology Herlev and Gentofte University Hospital Copenhagen Denmark
5. Institute of Biomedical Sciences, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
6. Department of Cardiology The Heart Centre, Rigshospitalet ‐ Copenhagen University Hospital Copenhagen Denmark
7. Department of Internal Medicine Hospital of Little Belt Kolding Denmark
8. Division of Cardiology, Department of Internal Medicine Holbæk Hospital Holbæk Denmark