PMC:7784787 / 57-129 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T2","span":{"begin":4,"end":12},"obj":"Sentence"},{"id":"T3","span":{"begin":13,"end":17},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"it\n\nAbstract\nAim: Face masks are an important addition to our arsenal in"}