[1] Sahlgrens Univ Hosp, Dept Cardiol, Gothenburg, Sweden
[2] Sahlgrens Acad, Cardiol Unit, Med, Gothenburg, Sweden
[3] Sahlgrens Univ Hosp, Dept Internal Med, Gothenburg, Sweden
[4] Linkoping Univ, Dept Cardiol, Linkoping, Sweden
[5] Linkoping Univ, Dept Med & Hlth Sci, Linkoping, Sweden