PMC:7281378 / 10322-10503 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T91858","span":{"begin":127,"end":128},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"t the natural cases were excluded from the analysis.\nThe reviews, letters, editorials, conference proceedings, and articles in a language other than English were not included in the"}