1. Boston University Medical Center Department of Medicine, Section of Internal Medicine, , Boston, MA , USA
2. University of Copenhagen Department of Cardiology, Herlev and Gentofte Hospital, , Herlev , Denmark
3. University of Copenhagen Department of Cardiology, Herlev and Gentofte Hospital, , Herlev, Denmark
4. University of Copenhagen Department of Cardiology, Rigshospitalet, , Copenhagen, Denmark
5. University of Copenhagen Department of Cardiology, Herlev and Gentofte Hospital, , Gentofte, Denmark
6. The Danish Heart Foundation , Copenhagen, Denmark
7. Nordsjaellands Hospital Department of Cardiology, , Hillerød, Denmark
8. University of Copenhagen Department of Public Health, , Copenhagen, Denmark
9. Brigham and Women’s Hospital Cardiovascular Division, , Boston, MA , USA