PMC:7534043 / 3146-3338 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T10","span":{"begin":119,"end":120},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":" Xinyu and Jiujiang (from Jiangxi Province), and Changde, Yueyang, and Shaoyang (from Hunan Province) were included as a control group due to their similar demographics and social development "}