1. US Department of Veterans AffairsCenter for Healthcare Organization and Implementation Research (CHOIR)VA Bedford Healthcare System Bedford MA USA
2. Section of General Internal Medicine Department of Medicine Boston University School of Medicine Boston MA USA
3. The Heller School for Social Policy and Management Brandeis University Waltham MA USA
4. Department of Psychiatry Harvard Medical School Boston MA USA
5. Center for Drug & Health StudiesDepartment of Sociology and Criminal Justice University of Delaware Newark DE USA
6. Department of Health Law, Policy and Management Boston University School of Public Health Boston MA USA