[1] Aalborg Univ Hosp, Dept Cardiol, Ctr Cardiovasc Res, Aalborg, Denmark
[2] Aarhus Univ, Dept Publ Hlth, Epidemiol Sect, Aarhus, Denmark
[3] Aalborg Univ Hosp, Unit Clin Biostat, Aalborg, Denmark
[4] Aalborg Univ Hosp, Aalborg AF Study Grp, Aalborg, Denmark