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. Author manuscript; available in PMC: 2017 Mar 22.
Published in final edited form as: Circulation. 2016 Mar 22;133(12):1171–1180. doi: 10.1161/CIRCULATIONAHA.115.018663

Figure 2.

Figure 2

Clusters of county-level age-standardized heart disease death rates, ages ≥35 for the beginning (1973–1974, A) and end (2009–2010, B) of the study period.