PMC:7396557 / 2630-2758 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T73986","span":{"begin":21,"end":22},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T59898","span":{"begin":92,"end":104},"obj":"http://purl.obolibrary.org/obo/OBI_0000245"}],"text":"pidemic was declared a public health emergency of international concern by the World Health Organization (WHO) (Fisher and Heyma"}