1. Southern Illinois University, Springfield, Illinois
2. Western Urologic Clinic, Salt Lake City, Utah
3. South Florida Medical Research, Aventura, Florida
4. Texas Urology, Carrollton, Texas
5. Arizona Institute of Urology, Tucson, Arizona
6. Carolina Urologic Research Center, Myrtle Beach, South Carolina
7. Chesapeake Urology Research Associates, Towson, Maryland
8. The Urology Group, Cincinnati, Ohio
9. Metro Urology, Woodbury, Minnesota
10. Manhattan Medical Research, New York, New York
11. Urology Associates of Denver, Englewood, Colorado
12. Urology San Antonio Research, San Antonio, Texas
13. Mayo Clinic, Rochester, Minnesota
14. Cleveland Clinic, Cleveland, Ohio
15. Institute of Medical Research, Scottsdale, Arizona
16. Lenox Hill Hospital, New York, New York
17. University of Texas Southwestern, Dallas, Texas