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Pulse Transit Time Measured by Photoplethysmography Improves the Accuracy of Heart Rate as a Surrogate Measure of Cardiac Output, Stroke Volume and Oxygen Uptake in Response to Graded Exercise

Pulse Transit Time Measured by Photoplethysmography Improves the Accuracy of Heart Rate as a Surrogate Measure of Cardiac Output, Stroke Volume and Oxygen Uptake in Response to Graded Exercise

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