1 2nd Department of Internal Medicine-Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital, 128 08 Prague, Czech Republic.
2 Department of Radiology, First Faculty of Medicine, Charles University and General University Hospital, 128 08 Prague, Czech Republic.
3 Department of Anesthesiology and Intensive Care, First Faculty of Medicine, Charles University and General University Hospital, 128 08 Prague, Czech Republic.
4 2nd Department of Surgery, Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University and General University Hospital, 128 08 Prague, Czech Republic.
5 Actelion Pharmaceuticals Ltd., A Janssen Pharmaceutical Company of Johnson & Johnson, 4123 Allschwil, Switzerland.
6 Data Analysis Department, Institute of Biostatistics and Analysis Ltd., 602 00 Brno, Czech Republic.