1. University of Kragujevac, Faculty of Medical Sciences, Department of Internal Medicine, Kragujevac, Serbia
2. University of Kragujevac, Faculty of Medical Sciences, Department of Social Medicine, Kragujevac, Serbia
3. University of Kragujevac, Faculty of Medical Sciences, Department of Ophthalmology, Kragujevac, Serbia
4. University of Kragujevac, Faculty of Medical Sciences, Department of Pediatrics, Kragujevac, Serbia
5. University of Kragujevac, Faculty of Medical Sciences, Department of Genetics, Kragujevac, Serbia
6. University of Kragujevac, Faculty of Medical Sciences, Department of Histology with Embryology, Kragujevac, Serbia
7. University Clinical Center of Kragujevac, Urgent Center, Department of Internal Medicine, Kragujevac, Serbia