PMC:7696151 / 93951-94218 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T600","span":{"begin":0,"end":267},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Other review articles, meta-analysis, retrospective studies, abstracts, conferences, editorials, letters, conference proceedings, manuscripts without full text available or articles that did not meet the inclusion criteria were not included in this systematic review."}