1. Institute for Drug Research School of Pharmacy The Hebrew University of Jerusalem Jerusalem 91120 Israel
2. Institute of Chemistry The Center for Nanoscience and Nanotechnology Casali Center for Applied Chemistry The Hebrew University of Jerusalem Jerusalem 9190401 Israel
3. Institute of Medicinal and Pharmaceutical Chemistry Technische Universität Braunschweig 38106 Braunschweig Germany
4. Center for Cancer Research and Comprehensive Cancer Center Austria
5. Institute of Analytical Chemistry Faculty of Chemistry University of Vienna Waehringer Strasse 38 1090 Vienna Austria
6. Dipartimento di Scienze del Farmaco, Universita di Padova 35131 Padova Italy