PMC:7796058 / 32732-32904 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T213","span":{"begin":0,"end":172},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"For this paper, the cleaning frequency for each room was every 6 h, meaning that after six hours the risk is maximized at one whereas immediately after cleaning it is at 0."}