1. Fox Chase Cancer Center, Temple Health, Philadelphia, Pennsylvania
2. ECOG-ACRIN Biostatistics Center, Dana-Farber Cancer Institute, Boston, Massachusetts
3. Abramson Cancer Center of University of Pennsylvania, Philadelphia, Pennsylvania
4. Tom Baker Cancer Center, University of Calgary, Calgary, Alberta, Canada
5. Department of Urology, University of Rochester, Rochester, New York
6. University of Texas M. D. Anderson Cancer Center, Houston, Texas
7. Moores Cancer Center, University of California-San Diego, La Jolla, California
8. Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey