1. Dow Division of Health Services Research, Department of Urology, University of Michigan Medical School, Ann Arbor, MI;
2. Department of Internal Medicine, Division of Hematology/Oncology, University of Michigan Medical School, Ann Arbor, MI;
3. VA HSR&D Center for Clinical Management Research, VA Ann Arbor Healthcare System, Ann Arbor, MI;
4. University of Michigan School of Public Health, Department of Biostatistics, Ann Arbor, MI;
5. University of Michigan, Department of Urology, Ann Arbor, MI;
6. Dow Division of Health Services Research, Department of Urology, University of Michigan Health System, Ann Arbor, MI;
7. University of Michigan Medical School, Ann Arbor, MI;