1. Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
2. Oncode Institute and Department of Cell and Chemical Biology Leiden University Medical Centre Einthovenweg 20 2333 ZC Leiden The Netherlands
3. Institute of Biochemistry II Goethe University Faculty of Medicine Theodor-Stern-Kai 7 60590 Frankfurt am Main Germany
4. Buchmann Institute for Molecular Life Sciences Goethe University Frankfurt, Riedberg Campus Max-von-Laue-Strasse 15 60438 Frankfurt am Main Germany
5. Department of Pharmacology and Pharmaceutical Sciences School of Pharmacy University of Southern California 1985 Zonal Avenue Los Angeles CA 90089 USA