1. Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen , 2900 Hellerup , Denmark
2. The Danish Heart Foundation , 1120 Copenhagen K, Copenhagen , Denmark
3. Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen , 2200 Copenhagen N , Denmark
4. Department of Cardiology, Aarhus University Hospital , 8200 Aarhus , Denmark
5. Department of Clinical Medicine, Faculty of Health, Aarhus University , 8200 Aarhus , Denmark
6. Department of Epidemiology and Biostatistics, School of Population Health, University of Auckland , 85 Park Road, Grafton, Auckland 1142 , New Zealand
7. Department of Cardiology, Rigshospitalet, Copenhagen University Hospital , 2100 Copenhagen , Denmark