1. Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX 77555.
2. Department of Pediatrics, University of Texas M.D. Anderson Cancer Center, Houston, TX 77030.
3. Department of Urology, Louisiana State University Health Sciences Center, Shreveport, LA 71103.
4. Louisiana Vaccine Center, and Department of Microbiology, Immunology and Parasitology, Louisiana State University Health Sciences Center, New Orleans, LA 70112.
5. Department of Comparative Biomedical Sciences, Louisiana State University, Baton Rouge, LA 70803.