1. Boston University School of Public Health, Boston, Massachusetts
2. Sol Price School of Public Policy, University of Southern California, Los Angeles, California
3. Leonard D. Schaeffer Center for Health Policy & Economics, University of Southern California, Los Angeles, California
4. RAND Corporation, Santa Monica, California
5. Boston Medical Center, Boston, Massachusetts
6. Canadian Institute for Substance Use Research, University of Victoria, Victoria, British Columbia, Canada
7. School of Public Health and Social Policy, University of Victoria, Victoria, British Columbia, Canada