1. North Side Christian Health Center, Pittsburgh, Pennsylvania, USA.
2. Department of Internal Medicine, Division of General Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA.
3. Informatics, Decision-Enhancement and Analytic Sciences (IDEAS) Center, VA Salt Lake City Health Care System, Salt Lake City, Utah, USA.
4. Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California, USA.
5. Los Angeles County Department of Health Services, Harbor-UCLA Medical Center, Torrance, California, USA.