PMC:7386785 / 3431-3602 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T98462","span":{"begin":117,"end":118},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"sults were highly variable across studies. Most had very low sensitivity and high specificity; only six symptoms had a sensitivity of at least 50% in at least one study: c"}