1. Department of Urology, Indiana University, Indianapolis, Indiana
2. Regenstrief Institute, Inc., Indianapolis, Indiana
3. Department of Biostatistics, Indiana University, Indianapolis, Indiana
4. Department of Urology, University of Michigan, Ann Arbor, Michigan
5. Center for Health Information and Communication, U.S. Department of Veterans Affairs, Veterans Health Administration, Health Services Research and Development Service CIN 13-416, Richard L. Roudebush VA Medical Center, Indianapolis, Indiana
6. Department of Pediatrics, Indiana University, Indianapolis, Indiana