1. Aalborg Atrial Fibrillation Study Group; Department of Cardiology; Aalborg University Hospital; Aalborg Denmark
2. Doctoral School of Medicine, Biomedical Science and Technology; Faculty of Medicine; Aalborg University; Aalborg East Denmark
3. Aalborg Atrial Fibrillation Study Group; Department of Cardiology and Unit of Clinical Biostatistics; Aalborg University Hospital; Aalborg Denmark
4. Department of Nursing Science; Health Faculty; Institute of Public Health; Aarhus University; Aarhus C Denmark
5. Health Faculty; Aalborg University Denmark; Aalborg East Denmark
6. University College Diakonova; Oslo Norway
7. Department of Public Health; Section for Epidemiology; Faculty of Health Sciences; Aarhus University; Aarhus C Denmark