PMC:7396557 / 2603-2743 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T73986","span":{"begin":48,"end":49},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T59898","span":{"begin":119,"end":131},"obj":"http://purl.obolibrary.org/obo/OBI_0000245"}],"text":" On January 30, 2020, the epidemic was declared a public health emergency of international concern by the World Health Organization (WHO) (F"}