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Human heart beat, vector illustration for your design, 6 editable layers eps10, Stock Vector, Vector And Low Budget Royalty Free Image. Pic. ESY-031742274 | agefotostock
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Engraving colorful wireframe blue human heart illustration on dark background with heart rate pulse beat Stock Photo - Alamy
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PDF] Light and Diurnal Cycle Affect Human Heart Rate: Possible Role for the Circadian Pacemaker | Semantic Scholar
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