1. Canadian Institute for Substance Use Research, University of Victoria, Victoria, BC, Canada
2. Clinical Addiction Research and Education (CARE) Unit, Department of Medicine, Boston Medical Center, Boston, MA
3. Department of Health Policy, Economics & Law, Sol Price School of Public Policy, University of Southern California, Los Angeles, CA
4. RAND Corporation, Santa Monica, CA
5. Department of Health Policy, Law, and Management, Boston University School of Public Health, Boston, MA