1. University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + Institute of Cardiovascular Diseases of Vojvodina, Sremska Kamenica, Serbia
2. University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + Clinical Center of Vojvodina, Novi Sad, Serbia
3. Institute of Cardiovascular Diseases of Vojvodina, Sremska Kamenica, Serbia