Photoplethysmogram

https://www.wikidata.org/wiki/Q7187885

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Computer science 56.2M papers	Engineering 24.7M papers	Operating system 6.4M papers	Electrical engineering 4.9M papers
Telecommunications 4.4M papers	Computer vision 2.1M papers	Wireless 707k papers	Filter (signal processing) 510k papers
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Photoplethysmogram 9,453 papers
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