1. Centre for Radiation Oncology, University Clinical Centre Kragujevac, Kragujevac, Serbia
2. Department of Science, Institute for Information Technologies, University of Kragujevac, Kragujevac, Serbia
3. Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
4. Clinical Pharmacology Department, University Clinical Centre Kragujevac, Kragujevac, Serbia