| John N Mafi | Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at university of california los angeles (University of California |
| John N Mafi | RAND Corporation. |
| Sitaram Vangala | Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at university of california los angeles (University of California |
| Sitaram Vangala | Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at university of california los angeles (University of California |
| Joseph A Ladapo | Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at university of california los angeles (University of California |
| Catherine A Sarkisian | David Geffen School of Medicine at university of california los angeles |
| Catherine A Sarkisian | Geriatric Research Education and Clinical Center, Greater Los Angeles Veterans Administration Healthcare System |
| Catherine A Sarkisian | David Geffen School of Medicine at university of california los angeles |
| Catherine A Sarkisian | Geriatric Research Education and Clinical Center, Greater Los Angeles Veterans Administration Healthcare System |