1. University of Belgrade, Faculty of Medicine, Belgrade, Serbia + Clinical Center of Serbia, Clinic for Orthopaedic Surgery and Traumatology, Belgrade, Serbia
2. University of Priština, Kosovska Mitrovica, Faculty of Medicine, Kosovska Mitrovica, Serbia
3. Clinical Center of Serbia, Clinic for Orthopaedic Surgery and Traumatology, Belgrade, Serbia
4. University of Belgrade, Faculty of Medicine, Belgrade, Serbia + Clinical Center of Serbia, Division of Cardiology, Belgrade, Serbia
5. Đorđe Joanović General Hospital, Zrenjanin, Serbia