1. Department of Cardiology, The Heart Center Copenhagen University Hospital – Rigshospitalet Copenhagen Denmark
2. Department of Biomedical Sciences, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
3. The Danish Pacemaker and ICD Registry Odense University Hospital Odense Denmark
4. Department of Cardiology Copenhagen University Hospital – North Zealand Hospital Hillerød Denmark
5. Department of Public Health University of Copenhagen Copenhagen Denmark
6. Department of Clinical Medicine, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark