1. Dept. of Cardiovascular Diseases, International Clinical Research Center, St. Anne’s Faculty Hospital and Masaryk University, Brno, Czech Republic
2. Institute of Normal and Pathological Physiology and Centre of Excellence for Regulatory Role of Nitric Oxide in Civilization Diseases, Slovak Academy of Sciences, Bratislava, Slovak Republic
3. Dept. of Cardio-thoracic and Transplant Surgery, International Clinical Research Center, St. Anne’s Faculty Hospital and Masaryk University, Brno, Czech Republic
4. 5th Dept. of Internal Medicine, University Hospital and Comenius University, Bratislava, Slovak Republic.