PMC:7696151 / 533-719 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T7","span":{"begin":0,"end":186},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"A systematic search of Scopus and PubMed databases was performed to identify clinical and preclinical studies on this argument; 2463 papers were identified and 133 studies were included."}