1. Clinical Center of Serbia, Clinic for Physical Medicine and Rehabilitation, Belgrade + School of Medicine, Belgrade
2. Institute of Epidemiology, School of Medicine, University of Belgrade
3. Clinic Center of Serbia, Clinic for Aneasthesiology, Belgrade
4. Clinical Center of Serbia, Clinic for Physical Medicine and Rehabilitation, Belgrade
5. School of Medicine, Belgrade + Clinical Center of Serbia, Clinic for Orthopedic Surgery and Traumatology, Belgrade