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Innovo Deluxe Sporting/Aviation Fingertip Pulse Oximeter with Plethysmograph and Perfusion Index - Walmart.com
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Zacurate® 500BL Sporting/Aviation Fingertip Pulse Oximeter Blood Oxygen Saturation Monitor with batteries and lanyard included (Navy Blue) - Walmart.com
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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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