1. Cardiac Surgery Department, Hospital of České Budějovice, B. Němcové 54, České Budějovice, Czech Republic
2. Cardiac Surgery Department, Hospital of České Budějovice, B. Němcové 54, České Budějovice, Czech Republic; Faculty of Health and Social Studies, University of South Bohemia, Jírovcova, České Budějovice, Czech Republic
3. Department of Cardiology, Hospital of České Budějovice, B. Němcové 54, České Budějovice, Czech Republic