1. Division of Hospital Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
2. College of Nursing, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
3. College of Liberal Arts and Sciences, Department of Sociology, University of Colorado, Denver, CO, USA
4. Division of Cardiovascular Medicine, University of Arizona, Sarver Heart Center, Tucson, AZ, USA
5. Division of Geriatric Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
6. Health Sciences Library University of Colorado Anschutz Medical Campus, Aurora, CO, USA
7. VA Eastern Colorado Geriatric Research Education and Clinical Center, Aurora, CO, USA
8. Veterans Affairs Medical Center, Aurora, Colorado, USA