PMC:7172841 / 2455-2553 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T22","span":{"begin":23,"end":24},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T23","span":{"begin":54,"end":66},"obj":"http://purl.obolibrary.org/obo/OBI_0000245"}],"text":"nents and was declared a pandemic by the World Health Organization. As of April 2, 2020, 961,818 d"}