Author(s) affiliations:Ales Mokracek1,2, Vojtech Kurfirst1,2,3*, Julia Csanady1,3, Vladislav Hytych3
1Department of Cardiothoracic Surgery, Hospital of Ceske Budejovice, The Czech Republic
2Faculty of Health and Social Sciences, University of South Bohemia in Ceske Budejovice, The Czech Republic
3Department of Thoracic Surgery, Thomayer Hospital in Prague, The Czech Republic