1. Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Department of Oncology, Georgetown University Medical Center, Georgetown University, Washington, D.C.
2. National Cancer Institute, National Institutes of Health, Bethesda, Maryland
3. Department of Medicine, Georgetown University Medical Center, Georgetown University, Washington, D.C.
4. Division of Cardiology, MedStar Washington Hospital Center, Washington, D.C.
5. Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee