1. Division of General Internal Medicine, Department of Medicine; University of California at San Francisco; San Francisco California
2. Division of Biostatistics, Department of Public Health Sciences; University of California at Davis; Davis California
3. General Internal Medicine Section, San Francisco Veteran Affairs Medical Center; San Francisco California
4. Department of Epidemiology; University of California at San Francisco; San Francisco California
5. Department of Biostatistics; University of California at San Francisco; San Francisco California
6. Multiethnic Health Equity Research Center; University of California at San Francisco; San Francisco California