[1] Univ Colorado, Hlth Sci Ctr, Dept Pharmacol, Aurora, CO 80045 USA
[2] Vanderbilt Univ, Dept Microbiol & Immunol, Nashville, TN 37212 USA
[3] Vanderbilt Univ, Sch Med, Dept Urol, Nashville, TN 37232 USA
[4] Human Genome Sci, Oncol Res Dept, Rockville, MD 20850 USA