1. Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
2. Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, California
3. Department of Family and Community Medicine, Penn State Milton Hershey Medical Center, Hershey, Pennsylvania
4. Department of Psychiatry, David Geffen School of Medicine, University of California, Los Angeles, California
5. Department of Family Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
6. Department of Health Policy & Management, UCLA Fielding School of Public Health, Los Angeles, California