1. Department of Health Research and Policy, Stanford University, School of Medicine, Stanford, California2Department of Cardiology, Gentofte University Hospital, Hellerup, Denmark
2. Department of Cardiology, Gentofte University Hospital, Hellerup, Denmark
3. Department of Cardiology, Gentofte University Hospital, Hellerup, Denmark3National Institute of Public Health, University of Southern Denmark, Copenhagen
4. Institute of Health, Science and Technology, Aalborg University, Aalborg, Denmark
5. The Heart Center, Rigshospitalet, Copenhagen, Denmark
6. Department of Cardiothoracic Anesthesia, The Heart Center, Rigshospitalet, Copenhagen, Denmark
7. Department of Health Research and Policy, Stanford University, School of Medicine, Stanford, California