PMC:7796058 / 34073-34225 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T227","span":{"begin":0,"end":152},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"This value is a weighted average of the risky behavior factors (number of violations) over the frequency of cleaning (normally six hours for each room)."}