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. Author manuscript; available in PMC: 2018 Dec 28.
Published in final edited form as: Drug Alcohol Depend. 2015 Nov 22;159:72–79. doi: 10.1016/j.drugalcdep.2015.11.015

Figure 1.

Figure 1

Number of registered medical marijuana participants per 1,000 adult state residents over time in 13 US states and the District of Columbia from January 2009 to April 2015