1. Department of Neurophysiology and Neuropharmacology; Medical University of Vienna; Vienna Austria
2. Institute of Organic Chemistry; University of Vienna; Währinger Straße 38 1090 Vienna Austria
3. iMed.ULisboa, Faculty of Pharmacy; University of Lisbon; Av. Prof. Gama Pinto 1649-003 Lisboa Portugal
4. Cytocentrics Bioscience GmbH; Rostock Germany
5. Center of X-ray Structure Analysis; University of Vienna; Währinger Straße 42 1090 Vienna Austria