1. Department of Urology, University of Michigan and Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan
2. Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan
3. Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
4. Department of Epidemiology, University of Illinois at Chicago School of Public Health, Chicago, Illinois
5. Urologic Oncology Branch, National Cancer Institute, Bethesda, Maryland
6. Department of Family Medicine and Public Health Sciences, Wayne State University School of Medicine, Detroit, Michigan