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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Pharmacoepidemiol Drug Saf. 2010 Jun;19(6):627–637. doi: 10.1002/pds.1939

Figure 1.

Figure 1

Study region (New Mexico) indicating number of patients seen at treatment facilities by the 3-digit ZIP code of their home address (October 1, 2006-September 30, 2008). The 3 digit labels are the 3-digit zip codes for each area.