PMC:7405836 / 4936-5052 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T43261","span":{"begin":13,"end":14},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T10109","span":{"begin":76,"end":78},"obj":"http://purl.obolibrary.org/obo/CLO_0053733"},{"id":"T52361","span":{"begin":108,"end":109},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"WHO declared a global health emergency on 31 January 2020; subsequently, on 11 March 2020, they declared it a pandem"}