1. Institute for Cardiovascular Rehabilitation, Faculty of Medicine, University of Nis, Niska Banja, Serbia
2. Center for Anesthesiology and Reanimatology, Clinical Center Niš, Niš, Serbia
3. Clinic for Physical Medicine and Rehabilitation, Clinical Center Niš, Niš, Serbia
4. Department for Pharmacology and Toxicology, Faculty of Medicine, University of Niš, Serbia
5. Department of Urology, Clinical Center Niš, Niš, Serbia
6. Clinic of Gastroenterology and Hepatology, Clinical Center Niš, Niš, Serbia
7. Department of Biochemistry, Faculty of Medicine, University of Niš, Niš, Serbia
8. Department of Chemistry, Faculty of Medicine, University of Niš, Niš, Serbia