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. 2020 Aug 2;9:2048004020940857. doi: 10.1177/2048004020940857

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© The Author(s) 2020

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Figure 3. — Changes in the ratio of the power of f₁ to f₀ (top) and NIVA value (bottom) after administration of (a) phenylephrine or (b) sodium nitroprusside (n = 7).