1. Medical Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland
2. Urology Department, George Washington University, Washington, D. C.
3. Brigham and Women's Hospital and Dana Farber Cancer Institute, Harvard University, Boston, Massachusetts
4. Division of Urology and Duke Prostate Center, Departments of Surgery and Pathology, Duke University, Durham, North Carolina
5. Cleveland Clinic, Cleveland, Ohio
6. Department of Radiation Oncology, MD Anderson Cancer Center, Houston, Texas