[1] Trondheim Reg & Univ Hosp, St Olavs Hosp, Clin Cardiol, Trondheim, Norway
[2] Univ Med Ctr Utrecht, Dept Vasc Med, Utrecht, South Africa
[3] Univ Oslo, Inst Clin Med, KG Jebsen Ctr Cardiac Biomarkers, Oslo, Norway
[4] Norwegian Univ Sci & Technol, Dept Circulat & Med Imaging, Trondheim, Norway
[5] St Olavs Hosp, Dept Internal Med, Stroke Unit, Trondheim, Norway