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Figure 4 Composite data of the electrocardiographic parameters (A to E) and heart rate (F) before and after epinephrine in Groups I (closed circle), II (open circle), III (open square), and IV (open triangle). *p < 0.005 vs. Groups II, III, and IV;  p < 0.005 vs. Groups III and IV; p < 0.05 vs. Groups III and IV; ¶p < 0.005 vs. before; ¶¶p < 0.05 vs. before.
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