1. Unit of Clinical Biostatistics and Bioinformatics; Aalborg University Hospital; Aalborg Denmark
2. Aalborg Thrombosis Research Unit, Department of Clinical Medicine, Faculty of Health; Aalborg University; Aalborg Denmark
3. University of Birmingham Centre for Cardiovascular Sciences; City Hospital; Birmingham United Kingdom
4. Department of Cardiology, Atrial Fibrillation Study group; Aalborg University Hospital; Aalborg Denmark