1. Division of Health Services Research, Department of Urology, University of Michigan, Ann Arbor
2. Santa Clara Valley Medical Center, San Jose, California
3. Duke National Clinician Scholars Program, Durham, North Carolina
4. Division of Urology, Duke Department of Surgery, Durham, North Carolina
5. Margolis Center for Health Policy, Duke University, Durham, North Carolina
6. Section of Urology, Durham Veterans Affairs Health Care System, Durham, North Carolina