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What is a pulse oximeter, and does the coronavirus pandemic mean you need one? - The Washington Post
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Pulse Oximeters Can Give False Readings In COVID-19 Patients With Dark Skin : Shots - Health News : NPR
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Inaccurate oxygen readings: the problem with pulse oximeters - Baylor College of Medicine Blog Network
Coronavirus prevention: What is a pulse oximeter and should you buy it for prevention of COVID-19? | The Times of India
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