PMC:7417187 / 14908-15002 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T144","span":{"begin":0,"end":94},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"As per institutional policy, the N95 masks were reused up to five times unless visibly soiled."}