PMC:7075079 / 757-864 JSONTXT

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{"project":"LitCovid-PD-CLO","denotations":[{"id":"T2","span":{"begin":10,"end":11},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"l/Methods\nA one-month cross-sectional observational study included 180 medical staff who treated patients w"}