1. Division of General Internal Medicine, Department of Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA
2. Program of Addiction Research, Clinical Care, Knowledge, and Advocacy (PARCKA), Division of Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA
3. University of Oregon, Eugene, OR, USA
4. Informatics, Decision-Enhancement, and Analytic Sciences (IDEAS) Center, VA Salt Lake City Health Care System, Salt Lake City, UT, USA