| Ron D Hays | Division of General Internal Medicine and Health Services Research, 12222David Geffen School of Medicine, university of california los angeles |
| Chi-Hong Tseng | Division of General Internal Medicine and Health Services Research, 12222David Geffen School of Medicine, university of california los angeles |
| Chi-Hong Tseng | Division of General Internal Medicine and Health Services Research, 12222David Geffen School of Medicine, university of california los angeles |
| Steven Y Chang | 12222David Geffen School of Medicine, university of california los angeles |
| Nida Qadir | 12222David Geffen School of Medicine, university of california los angeles |
| Neil S Wenger | Division of General Internal Medicine and Health Services Research, 12222David Geffen School of Medicine, university of california los angeles |