1. Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia.
2. St. Michael's University Hospital, 2nd Internal Ambulance, Bratislava, Slovakia.
3. Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia.
4. Department of Heart Failure, National Institute of Cardiovascular Diseases, Clinic of Cardiology, Bratislava, Slovakia.