PMC:7696151 / 92867-93075 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T594","span":{"begin":0,"end":208},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"According to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a systematic literature search was performed in May 2020 and included all reports published to August 2020."}