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Proceedings of the Royal Society of Medicine logoLink to Proceedings of the Royal Society of Medicine
. 1912;5(Clin Sect):188. doi: 10.1177/003591571200500269

Observations of the Movements of the Heart by means of Electrocardiograms

James Mackenzie
PMCID: PMC2006014  PMID: 19975652

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Page 188

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