1. Institute for Children’s and Youth Health Care of Vojvodina, Novi Sad + Faculty of Medicine, Novi Sad
2. Faculty of Medicine, Novi Sad + Clinical Centre of Vojvodina, Clinic for Orthopaedic Surgery and Traumatology, Novi Sad
3. Faculty of Medicine, Belgrade + Clinical Centre of Serbia, Clinic for Orthopaedic Surgery and Traumatology, Belgrade
4. Emergency Medicine Centre of Montenegro, Podgorica, Montenegro