1. Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet , 182 88 Stockholm , Sweden
2. Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet , 171 76 Stockholm , Sweden
3. Department of Health, Medicine and Caring Sciences, Linköping University , 581 83 Linköping , Sweden
4. Department of Cardiology, Linköping University Hospital , 581 85 Linköping , Sweden
5. Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg , 413 85 Gothenburg , Sweden
6. Department of Public Health and Clinical Medicine, and Heart Centre, Umeå University , 901 87 Umeå , Sweden
7. Department of Clinical Sciences, Lund University , 221 84 Lund , Sweden
8. Department of Medical Sciences, Cardiology, Uppsala University , 751 85 Uppsala , Sweden