PMC:7781500 / 128-163 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T3","span":{"begin":22,"end":30},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"nal Analytical Study\n\nAbstract\nBack"}