1. Clinical Addiction Research and Education Unit at Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts (M.R.L., S.M.B.)
2. Office of Special Analytic Projects, Office of Population Health, Massachusetts Department of Public Health, Boston, Massachusetts (D.B., T.L.)
3. Tufts University School of Medicine, Boston, Massachusetts (T.J.S.)
4. Biostatistics and Epidemiology Data Analytics Center, Boston University School of Public Health, Boston, Massachusetts (N.W.)
5. Boston University School of Public Health, Boston, Massachusetts (Z.X.)
6. Clinical Addiction Research and Education Unit at Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts, and Center for Research on Health Care, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (J.M.L.)
7. Clinical Addiction Research and Education Unit at Boston University School of Medicine and Boston Medical Center and Bureau of Substance Addiction Services, Massachusetts Department of Public Health, Boston, Massachusetts (A.Y.W.)