1. University of Belgrade, Faculty of Medicine, University Clinical Center of Serbia, Clinic for Orthopaedic Surgery and Traumatology, Belgrade, Serbia
2. University of Belgrade, Faculty of Organizational Sciences, Belgrade, Serbia
3. University of Belgrade, Faculty of Medicine, University Clinical Center of Serbia, Clinic for Neurosurgery, Radiology Department, Belgrade, Serbia
4. University of Belgrade, Faculty of Medicine, Institute of Anatomy, Belgrade, Serbia