User:chiaratsmx198655
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A resting electrocardiogram (ECG) provides/reveals/offers a window/glimpse/snapshot into the heart's electrical/intrinsic/natural activity when at equilibrium/rest/quiescence. This noninvasive
https://siobhanlsnk671566.luwebs.com/36317934/resting-electrocardiogram-discovering-normal-heart-function