PMC:7396557 / 79-110 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T2","span":{"begin":12,"end":20},"obj":"Sentence"},{"id":"T3","span":{"begin":21,"end":31},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":") in China\n\nAbstract\nBackground"}