PMC:7152911 / 5778-5908 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T48","span":{"begin":81,"end":103},"obj":"Sentence"},{"id":"T49","span":{"begin":104,"end":110},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"ch introduce measurement bias and increase measurement uncertainty (Clark et al. 2016; Silverman et al. 2019). Considering such li"}

{"project":"2_test","denotations":[{"id":"32364936-27779849-7712884","span":{"begin":81,"end":85},"obj":"27779849"}],"text":"ch introduce measurement bias and increase measurement uncertainty (Clark et al. 2016; Silverman et al. 2019). Considering such li"}