No abstract available
MeSH terms
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Biomedical Technology / instrumentation*
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Electrocardiography / history*
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Electrocardiography / instrumentation
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Government Regulation
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History, 19th Century
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History, 20th Century
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Humans
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Self Care / instrumentation*
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Telemedicine / history
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Telemedicine / instrumentation
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Telemetry / history*
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Telemetry / instrumentation
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United States