1. Department of Pharmacognosy, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221 Belgrade, Serbia
2. Department of Microbiology and Immunology, University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
3. Actavis Trading Ltd, Djordja Stanojevica 12, Novi Beograd 11070, Serbia
4. Department of Organic Chemical Technology, University of Niš, Faculty of Technology, Bulevar oslobođenja 124, 16000 Leskovac, Serbia