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Figure 3 Trends in Angiography Use and Results in Olmsted County, Minnesota, 1990 to 2004
Yearly rates (per 100,000 persons) are shown on a logarithmic scale and were standardized by the direct method to the age and gender distribution of the U.S. population in 2000. CAD = coronary artery disease; LM = left main coronary artery.
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