1. The Department of Cardiac, Thoracic and Vascular Surgery, Hospital of Lithuanian University of Health Sciences, Kaunas, Lithuania
2. Institute of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
3. The Department of Anesthesiology, Hospital of Lithuanian University of Health Sciences, Kaunas, Lithuania
4. Biochemical Laboratory of the Institute of Neurosciences, Lithuanian University of Health Sciences, Kaunas, Lithuania