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Figure 2 Linear regression trend (y = 100 – 10x, r = 0.36, p = 0.0008) of stenosis severity (percent diameter stenosis) of the lesion to be dilated between patients with sufficient and insufficient collateral channels. Stenosis severity was significantly higher in patients with sufficient collateral channels than in those with insufficient collateral channels. Triangles = mean value; vertical lines = ±SD.
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