PMC:7780429 / 17412-17522 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T172","span":{"begin":40,"end":75},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"gs and 24-hour duties Ref Ref 0.0001\nRotating shifts 3.35 1.81 to 6.23\nOther work shifts 2.83 1.52 to 5"}