Frequency domain parameters of heart rate variability should be quoted in normalised units together with their absolute values: author's reply.
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Shin
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Lee
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Kim
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Jung
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Oh
D018686:Anesthetics, Intravenous / Q000494:pharmacology*; D000959:Antihypertensive Agents / Q000494:pharmacology*; D020927:Dexmedetomidine / Q000494:pharmacology*; D005260:Female; D006339:Heart Rate / Q000187:drug effects*; D006801:Humans; D006993:Hypnotics and Sedatives / Q000494:pharmacology*; D007023:Hypotension, Controlled / Q000379:methods*; D008297:Male; D009529:Nicardipine / Q000494:pharmacology*; D010880:Piperidines / Q000494:pharmacology*
D018686:Anesthetics, Intravenous; D000959:Antihypertensive Agents; D006993:Hypnotics and Sedatives; D010880:Piperidines; D020927:Dexmedetomidine; D009529:Nicardipine