PMC:7160614 / 667-809 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T7","span":{"begin":67,"end":71},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"},{"id":"T8","span":{"begin":85,"end":89},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"},{"id":"T9","span":{"begin":112,"end":116},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"}],"text":"o primary (n = 98) and validation (n = 38) cohorts. The chi-square test, Student’s t test, and Kruskal-Wallis H test were performed, comparing"}