1. Department of Pharmacology and Toxicology
2. Department of Pharmaceutical and Medicinal Chemistry II
3. Institute of Organic Chemistry, University of Regensburg, Regensburg, Germany
4. The College of Life Sciences, Nankai University, Tainjin, China
5. Ben May Department for Cancer Research, The University of Chicago, Chicago, Illinois 60637-1546
6. Institute of Pharmacology, Medical School of Hannover, Hannover, Germany