1. Faculty of Pharmacy, Department of Medical Biochemistry, University of Belgrade, Belgrade, Serbia;
2. Faculty of Pharmacy, Department of Clinical Biochemistry, University of Ljubljana, Ljubljana, Slovenia;
3. Department of Haematology, Clinical Hospital Center Zemun, Belgrade, Serbia;
4. Faculty of Medicine, University of Belgrade, Belgrade, Serbia;
5. Faculty of Pharmacy, Department of Organic Chemistry, University of Belgrade, Belgrade, Serbia