1. Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee
2. Center for Surgical Quality and Outcomes Research, Vanderbilt University Medical Center, Nashville, Tennessee
3. United States Department of Veterans Affairs Tennessee Valley Geriatric Research, Education, and Clinical Center, Nashville, Tennessee
4. Department of Urology, New York University School of Medicine and the United States Department of Veterans Affairs New York Harbor Healthcare System, New York, New York