1. Third Department of Cardiology, Silesian Centre for Heart Diseases; Medical University of Silesia; Zabrze Poland
2. Centre for Stroke Research Berlin; Charité Medical School; Berlin Germany
3. Department of Heart Diseases; Wroclaw Medical University; Wroclaw Poland
4. Division of Innovative Clinical Trials; Department of Cardiology and Pneumology, University Medical Center Göttingen (UMG); Göttingen Germany
5. Clinical Division of Anaesthesiology and Intensive Therapy of the Department of Anesthesiology, Intensive Treatment and Emergency Medicine; Medical University of Silesia; Zabrze Poland
6. Department of Heart Failure and Transplantology; Institute of Cardiology; Warsaw Poland