| Douglas S Bell | Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California. |
| Chi-Hong Tseng | Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California. |
| Chi-Hong Tseng | Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California. |
| Carol M Mangione | Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California. |
| Carol M Mangione | university of california los angeles Fielding School of Public Health, University of California |