1. a Laboratory of Medicinal Chemistry , Center for Cancer Research, National Cancer Institute at Frederick, NIH , Frederick, Maryland, USA
2. b U.S. Food & Drug Administration , Rockville, Maryland, USA
3. c Department of Clinical Pharmacology, Faculty of Health Sciences , Ben-Gurion University of the Negev , Beer-Sheva, Israel
4. d Departments of Urology, Biochemistry and Molecular Biology, Keck School of Medicine , USC/Norris Comprehensive Cancer Center, University of Southern California , Los Angeles, California, USA