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HRV Literature
HRV Literature
The LF/HF ratio does not accurately measure cardiac sympatho-vagal balance. George E. Billman, 2013
https://www.frontiersin.org/articles/10.3389/fphys.2013.00026/full
, multiple selections available,
https://www.frontiersin.org/articles/10.3389/fphys.2013.00026/full