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Figure 1 The effects of dobutamine on left circumflex coronary flow (QLCXIND) in control (open bars) and with stenosis (shaded bars). Statistical significance vs. baseline (dobutamine = 0) within each group (control or stenosis) is indicated by: # = p < 0.05; ## = p < 0.01. Significant differences between control and stenosis at each dobutamine level are indicated by: * = p < 0.05; ** = p < 0.01. Note that the indexed LCX flow was determined at a fixed end-systolic pressure. For details see text and Table 1.
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