PMC:7736111 / 131536-131578 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T821","span":{"begin":0,"end":42},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"However, an increasing trend was observed."}