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PubMed:32181672 / 1536-1538 JSON TXT

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LitCovid-TimeML

{"project":"LitCovid-TimeML","denotations":[{"id":"tok344","span":{"begin":0,"end":2},"obj":"CD"}],"text":"52"}

LitCovid-PD-CLO

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T8","span":{"begin":0,"end":2},"obj":"http://purl.obolibrary.org/obo/CLO_0001407"}],"text":"52"}

MeasurableQuantitativeAnnotation

{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N5","span":{"begin":0,"end":2},"obj":"num"}],"text":"52"}