1. Clinic of Cardiology , University Clinical Center Kragujevac , Kragujevac , Serbia
2. Clinic of Pulmolonogy , University Clinical Center Kragujevac , Kragujevac , Serbia
3. Institute for Emergency Medical Aid , Kragujevac , Serbia
4. University of Kragujevac, Faculty of Medical Sciences , Department of Dentistry , Kragujevac , Serbia
5. University of Kragujevac, Faculty of Medical Sciences , Department of Biochemistry , Kragujevac , Serbia
6. University of Kragujevac, Faculty of Medical Sciences , Department of Internal Medicine , Kragujevac , Serbia
7. Clinic of Internal Medicine , University Clinical Centre “Kragujevac” , Kragujevac , Serbia
8. University of Kragujevac, Faculty of Medical Sciences , Department of Clinical Pharmacy , Kragujevac , Serbia