1. University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
2. Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000, Ljubljana, Slovenia
3. Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
4. University of Niš, Faculty of Medicine, Department of Chemistry, Blvd. Dr Zorana Đinđića 81, 18108 Niš, Serbia
5. Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11000 Belgrade, Serbia