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. 2019 May 1;10(2):295–306. doi: 10.1055/s-0039-1688478

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This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.

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Fig. 1 — Heart rate observation (HeRO) monitor-visualizing heart rate characteristics index, corresponding heart rate pattern, and controls to scroll forward and backward in time.