1. Endocrine Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
2. Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
3. Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
4. Genitourinary Malignancies Branch, Medical Oncology Service, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
5. Department of Surgery, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052