1. Section of Addiction Medicine, Department of Medicine, Oregon Health & Science University, Portland
2. Oregon Health & Science University–Portland State University School of Public Health, Portland
3. Comagine Health, Portland, Oregon
4. Section of General Internal Medicine, Department of Medicine, University of Washington, Seattle
5. Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, Massachusetts
6. Oregon Health Authority, Portland
7. Department of Population Science and Policy, Southern Illinois University School of Medicine, Springfield
8. Department of Behavioral, Social, and Health Education Sciences, Rollins School of Public Health, Emory University, Atlanta, Georgia
9. Department of Behavioral Medicine and Psychiatry, West Virginia University School of Medicine, Morgantown
10. Department of Medicine, Infectious Diseases, West Virginia University School of Medicine, Morgantown
11. RTI International, Research Triangle Park, North Carolina
12. Department of Health Behavior, Gillings School of Global Public Health, University of North Carolina–Chapel Hill, Chapel Hill
13. Division of Epidemiology, College of Public Health, The Ohio State University, Columbus
14. Department of Epidemiology and Biostatistics, School of Public Health, West Virginia University, Morgantown
15. Division of Infectious Diseases, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison
16. Department of Family Medicine & Community Health, University of Wisconsin School of Medicine & Public Health, Madison
17. Department of Epidemiology, University of Kentucky, Lexington
18. Center on Drug and Alcohol Research, University of Kentucky, Lexington