PMC:7784787 / 3119-3321 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T29","span":{"begin":26,"end":108},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"ead of the virus [14–16]. One approach is to refine and improve face masks, both in terms of fabric and fit.\nFace masks worn in a pandemic function more effectively as source control rather than protect"}