PMC:7212965 / 26275-26439 JSONTXT

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    LitCovid-PD-CLO

    {"project":"LitCovid-PD-CLO","denotations":[{"id":"T204","span":{"begin":128,"end":129},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":" 32 , 57 , 68 Of these, 3 studies were published after the systematic review by Cheung et al.10 First, Dreher et al68 conducted a retrospective cohort study in Germ"}

    2_test

    {"project":"2_test","denotations":[{"id":"32407808-32519944-43469296","span":{"begin":11,"end":13},"obj":"32519944"},{"id":"32407808-32519944-43469297","span":{"begin":115,"end":117},"obj":"32519944"}],"text":" 32 , 57 , 68 Of these, 3 studies were published after the systematic review by Cheung et al.10 First, Dreher et al68 conducted a retrospective cohort study in Germ"}