PMC:7386785 / 3385-3582 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T98462","span":{"begin":163,"end":164},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"nations of different signs and symptoms and results were highly variable across studies. Most had very low sensitivity and high specificity; only six symptoms had a sensitivity of at least 50% in a"}