PMC:7780429 / 12553-12605 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T98","span":{"begin":0,"end":52},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" Surgical mask 208 (79.7%) 89 (42.8%) 119 (57.2%)"}