1. Department for Physical Medicine and Rehabilitation, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
2. Clinic for Physical Medicine and Rehabilitation, University Clinical Center Niš, 18000 Niš, Serbia
3. Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
4. Neurology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia
5. Department of Biomedical Sciences, State University of Novi Pazar, 36300 Novi Pazar, Serbia
6. Department of Pediatric Surgery, University Children’s Hospital, 11000 Belgrade, Serbia
7. Department of Physical Medicine and Rehabilitation, University Children’s Hospital, 11000 Belgrade, Serbia
8. Department of Pediatrics, University Children’s Hospital, 11000 Belgrade, Serbia