Affiliation: | (1) Department of Anesthesiology and Intensive Care, General Teaching Hospital, First Faculty of Medicine, Charles University, U Nemocnice 2, Prague 2, 128 08, Czech Republic;(2) 2nd Department of Surgery, Department of Cardiovascular Surgery, General Teaching Hospital, First Faculty of Medicine, Charles University, Prague, Czech Republic;(3) Department of Statistics, First Faculty of Medicine, Charles University, Prague, Czech Republic |