1. Institute of Biochemistry, Medical Faculty, University of Pristina, Kosovska Mitrovica, Serbia
2. Clinic for Infectious Diseases, Medical Faculty, University of Pristina, Kosovska Mitrovica, Serbia
3. State University of Novi Pazar, Novi Pazar, Serbia
4. Institute of Physiology, Medical Faculty, University of Pristina, Kosovska Mitrovica, Serbia