PMC:7281378 / 9353-9586 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T64","span":{"begin":0,"end":233},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The articles were first screened through their abstracts to find out their relevance for inclusion, and, if required, the introduction and/or results and discussion sections were also screened to assess their relevance for inclusion."}