1. Military Medical Academy, Clinic for Vascular and Endovascular Surgery, Belgrade + University of Defense, Faculty of Medicine of the Military Medical Academy, Belgrade
2. University of Defense, Faculty of Medicine of the Military Medical Academy, Belgrade + Military Medical Academy, Clinic for General Surgery, Belgrade
3. University of Defense, Faculty of Medicine of the Military Medical Academy, Belgrade + Military Medical Academy, Clinic for Pulmology, Belgrade
4. University of Defense, Faculty of Medicine of the Military Medical Academy, Belgrade + Military Medical Academy, Clinic for Urgent Internal Medicine, Belgrade