1. Faculty of Medicine of the Military Medical Academy, University of Defence, Belgrade + Clinic of Anesthesiology and Intensive Care, Military Medical Academy, Belgrade
2. Clinic of Anesthesiology and Intensive Care, Military Medical Academy, Belgrade
3. Faculty of Medicine of the Military Medical Academy, University of Defence, Belgrade
4. Faculty of Medicine of the Military Medical Academy, University of Defence, Belgrade + Clinic of Vascular Surgery, Military Medical Academy, Belgrade
5. Clinic of Urology, Military Medical Academy, Belgrade
6. Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri, USA