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Figure 3 from Design Considerations of Small Size Reflective Type Pulse Oximeter Heads in Special Applications | Semantic Scholar
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Reflectance Pulse Oximetry from Core Body in Neonates and Infants: Comparison to Arterial Blood Oxygen Saturation and to Transmission Pulse Oximetry | Journal of Perinatology
Pulse oximetry - Wikipedia
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2_sensor_oximter.pdf
8000R Reflectance Pulse Oximetry Sensor - Nonin
What is the difference between transmittance and reflectance pulse oximeters? - Open Critical Care
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