Heart Rate Variability Analysis with the HRV Toolkit

* Short-term HRV statistics (VLF = spectral power between 0 and 0.04 Hz.) Selected References: [1] Wolf MM, Varigos GA, Hunt D, Sloman JG. Sinus arrhythmia in acute myocardial infarction. Med J Aust 1978;2:52-53. [2] Kleiger RE, Miller JP, Bigger JT, Moss

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