1. Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary
2. Institute of Pharmaceutical Analysis, University of Szeged, H-6720 Szeged, Hungary
3. Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
4. Institute of Pharmacodynamics and Biopharmacy, University of Szeged, H-6720 Szeged, Hungary
5. Department of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
6. Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Hungary