1Department of Analytical Chemistry, University of Chemistry and Technology, Technická 5, Prague 6, 166 28, Czech Republic
2Forensic Laboratory of Biologically Active Substances, Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Technická 5, Prague 6, 166 28, Czech Republic
3National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic