1. Center for Quality Aging, Vanderbilt University Medical Center, Nashville, Tennessee
2. Geriatric Research Education and Clinical Center, Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee
3. Section of Hospital Medicine, Division of General Internal Medicine and Public Health, Vanderbilt University Medical Center, Nashville, Tennessee
4. Center for Health Services Research, Vanderbilt University Medical Center, Nashville, Tennessee
5. Department of Biostatistics, Vanderbilt University, Nashville, Tennessee
6. Division of Geriatrics, Vanderbilt University Medical Center, Nashville, Tennessee