1. Department of Emergency Medicine University of Colorado, School of Medicine Aurora Colorado USA
2. Geriatric Research Education and Clinical Center, Rocky Mountain Regional VA Medical Center Aurora Colorado USA
3. Department of Family Medicine and Public Health, University of California San Diego San Diego California USA
4. Department of Medicine Indiana University School of Medicine Indianapolis Indiana USA
5. Indiana University Center for Aging Research Indianapolis Indiana USA
6. Department of Epidemiology Colorado School of Public Health, University of Colorado Anschutz Medical Campus Aurora Colorado USA
7. Department of Family Medicine Keck School of Medicine of the University of Southern California Los Angeles California USA
8. Department of Biostatistics & Informatics Colorado School of Public Health Aurora Colorado USA
9. Division of Geriatric Medicine University of Colorado, School of Medicine Aurora Colorado USA