PMC:7796329 / 7050-7181 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T49","span":{"begin":0,"end":131},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Because the existing research models have not been integrated, however, there are limitations in fully explaining previous results."}