1. Clinic of Anesthesiology and Intensive Therapy, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
2. Faculty of Medicine, Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia
3. Institute for Medical Research, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
4. Institute of Medical Biochemistry, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
5. Department of Anesthesiology, Clinical Hospital Center Kosovska Mitrovica, Anri Dinana bb, 38220 Kosovska Mitrovica, Serbia
6. Department of Anesthesiology and Intensive Therapy, Mother and Child Health Care Institute of Serbia, Radoja Dakica 8, 11000 Belgrade, Serbia
7. School of Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, Serbia
8. Emergency Medical Center of Montenegro, Vaka Djurovica bb, 81000 Podgorica, Montenegro
9. Clinical Center Kragujevac, Zmaj Jovina 30, 34000 Kragujevac, Serbia
10. Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica 69, 34000 Kragujevac, Serbia