[1] Odense Univ Hosp, Dept Cardiol, Odense, Denmark
[2] Univ Southern Denmark, Dept Clin Res, Odense, Denmark
[3] Herlev & Gentofte Univ Hosp, Dept Cardiol, Hellerup, Denmark
[4] Univ Copenhagen, Dept Clin Med, Copenhagen, Denmark
[5] Copenhagen Univ Hosp, Dept Cardiol, Rigshosp, Copenhagen, Denmark
[6] Univ Southern Denmark, Natl Inst Publ Hlth, Copenhagen, Denmark
[7] Aarhus Univ Hosp, Dept Cardiol, Aarhus, Denmark
[8] Aalborg Univ Hosp, Dept Cardiol, Cardiothorac Surg & Clin Nursing Res Unit, Aalborg, Denmark
[9] Odense Univ Hosp, Dept Cardiac Thorac & Vasc Surg, Odense, Denmark
[10] Univ Southern Denmark, Dept Clin Res, JB Winslows Vej 19, DK-5000 Odense C, Denmark