PMC:7074424 / 9690-9907 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T92","span":{"begin":85,"end":86},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"nd after preliminary screening of the databases. After title and abstract screening, a total of 230 articles were excluded. Full-text screening of the remaining 154 articles was done. Among these studies, after full-t"}

{"project":"LitCovid-sentences","denotations":[{"id":"T49","span":{"begin":49,"end":123},"obj":"Sentence"},{"id":"T50","span":{"begin":124,"end":183},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"nd after preliminary screening of the databases. After title and abstract screening, a total of 230 articles were excluded. Full-text screening of the remaining 154 articles was done. Among these studies, after full-t"}