1. Center for Patient and Professional Advocacy, Vanderbilt University Medical Center, Nashville, Tennessee
2. Department of Surgery, Stanford University, Stanford, California
3. Section of Surgical Sciences, Vanderbilt University Medical Center, Nashville, Tennessee
4. Center for Surgery and Health Economics, Department of Surgery, Perelman School of Medicine, Philadelphia, Pennsylvania
5. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
6. Department of Medicine, Stanford University, Stanford, California
7. Department of Clinical Effectiveness and Quality Improvement, University of Pennsylvania Health System, Philadelphia
8. Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee
9. Center for Quality, Safety and Risk Prevention, Vanderbilt University Medical Center, Nashville, Tennessee