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Home pulse oximeters can help diagnose covid-19 symptoms, but it's easy to use it the wrong way - The Washington Post
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What is PR BPM in pulse oximeter? Normal values high or low count mean? - Dr. Durgaprasad Reddy B - YouTube
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Amazon.com: CONTEC LED CMS50M Pulse Oximeter,SpO2 and PR Value Waveform Blood Oxygen, Neck/Wrist Cord : Health & Household
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Amazon.com: CONTEC CMS50NA Pulse Oximeter SpO2 and PR Value Waveform Blood Oxygen Neck/Wrist Corda : Health & Household
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Fingertip Oximeter Pulse Oximeter Oxygen Saturation Meter SPO2, PR And PI Reading Blood Pressure Monitor. No Bluetooth. Black Color. - Newegg.com
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