1 Department of Cardiac Surgery, Institute for Clinical and Experimental Medicine, Prague, Czech Republic; Third Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.
2 Department of Neurology, University Hospital Motol, Second Faculty of Medicine, Prague, Czech Republic.
3 Department of Cardiac Surgery, Institute for Clinical and Experimental Medicine, Prague, Czech Republic; Second Department of Surgery, Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.