1. Faculty of Medical Sciences, Kragujevac + Clinical Center Kragujevac, Department of Cardiology, Kragujevac
2. Klinikum Coburg, GmbH, Department of Cardiology, Coburg, Germany
3. Military Medical Academy, Belgrade + University of Defence, Faculty of Medicine of the Military Medical Academy, Belgrade
4. Clinical Center Kragujevac, Department of Internal Medicine, Kragujevac
5. Faculty of Medical Sciences, Center for Molecular Medicine and Stem Cell Research, Kragujevac