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. Author manuscript; available in PMC: 2011 Jan 15.
Published in final edited form as: Drug Alcohol Depend. 2009 Sep 12;106(2-3):142. doi: 10.1016/j.drugalcdep.2009.08.007

Figure 3.

Figure 3

Mean number of injection drug users per 10,000 (3a) and mean quality of the local environment index (3b) in 88 U.S. metropolitan statistical areas 1999 – 2002 (averaged over time).