PMC:7386785 / 2202-2370 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T39060","span":{"begin":157,"end":158},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":" review authors independently selected all studies, at both title and abstract stage and full‐text stage. They resolved any disagreements by discussion with a third rev"}