1. University of Niš Faculty of Medicine, Department of Chemistry Blvd. Dr. Zorana Đinđića 81 18000 Niš Serbia
2. University of Niš Faculty of Medicine, Department of Pharmacy Blvd. Dr. Zorana Đinđića 81 18000 Niš Serbia
3. University of Belgrade Institute of Chemistry, Technology and Metallurgy Njegoševa 12 11000 Belgrade Serbia
4. University of Niš Faculty of Medicine, Department of Biochemistry Blvd. Dr. Zorana Đinđića 81 18000 Niš Serbia