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Amazon.com: Tomorotec Fingertip Pulse Oximeter Accurate Blood Oxygen Saturation Level (SpO2), Perfusion Index (PI), Pulse Rate (PR), Respiratory Rate (RR) Monitor with Lanyard [Sports & Aviation Use Only] (Black) : Industrial &
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Pulse Oximeters and Coronavirus: Devices Have Higher Error Rate in Black Patients - The New York Times
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