PMC:7281378 / 9932-10093 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T68","span":{"begin":68,"end":72},"obj":"Sentence"},{"id":"T69","span":{"begin":73,"end":105},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"of the methodology can be observed in the PRISMA chart (Figure 2).\n\n2.2. Inclusion and Exclusion Criteria\nThe following criteria were applied for screening of th"}