1. University of Texas M. D. Anderson Cancer Center, Houston, Texas
2. Kimel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania
3. L’Hotel-Dieu de Québec, Centre Hospitalier Universitaire de Québec, Québec, Province de Québec, Canada
4. Kingston General Hospital, Kingston, Ontario, Canada
5. Stanford Cancer Center, Palo Alto, California
6. Emory Clinic, Atlanta, Georgia
7. McGuire Veterans Affairs Medical Center, Richmond, Virginia
8. Department of Urology, Mount Sinai Medical Center, New York, New York