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Corresponding author. Email: keith.easterling@emory.edu
Dr. Jones conceived of the study.
Drs. Easterling and Mack designed the study methods.
Dr. Easterling performed the statistical analysis and wrote the draft text.
Dr. Mack supervised all aspects of the study completion and manuscript development.
All authors contributed to writing and approved the final manuscript.
The authors would like to acknowledge Rong Cai, M.A., Substance Abuse and Mental Health Services Administration (SAMHSA) Center for Behavioral Health Statistics and Quality (CBHSQ) for her efforts in support of quality checks on the data and analyses.
All authors declare that they have no conflicts of interest to disclose.
Authors were affiliated with the Centers for Disease Control and Prevention (CDC), National Center for Injury Prevention and Control (NCIPC), Atlanta, Georgia, or the Office of the Assistant Secretary for Planning and Evaluation, US Department of Health and Human Services, Washington, DC.
All work for this manuscript was done by Federal employees and no funding was involved.
© 2017 Elsevier B.V