1. Division of Cardiac Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria
2. Division of Cardiothoracic and Vascular Anaesthesia and Intensive Care, Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
3. Department of Surgery, Division of General Surgery, Medical University of Vienna, Vienna, Austria
4. Department of Blood Group Serology and Transfusion Medicine, Medical University of Vienna, Vienna, Austria