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Drug overdose death rates, by selected age group, United States, 1999–2016. From “Drug Overdose Deaths in the United States, 1999-2016,” by H. Hedegaard, M. Warner, and A. M. Minino, NCHS Data Brief, No. 294. December 2017. https://www.cdc.gov/nchs/data/databriefs/db294.pdf
