1. Department of Pharmacognosy, Faculty of Pharmacy, Medical University, 2 Dunav Street, Sofia 1000, Bulgaria
2. Department of Natural Drugs, Faculty of Pharmacy, Masaryk University, Palackého tř. 1946/1, Brno 61200, Czech Republic
3. Department of Molecular Pharmacy, Faculty of Pharmacy, Masaryk University, Palackého tř. 1946/1, Brno 61200, Czech Republic