PMC:7341464 / 321-537 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T4","span":{"begin":186,"end":187},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"s of the Hubei region in China when compared to the prevalence of the general population of that region. Unfortunately, in this retrospective study, follow-up data were not provided and a direct control group was not"}

{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T2","span":{"begin":203,"end":208},"obj":"Chemical"}],"attributes":[{"id":"A2","pred":"chebi_id","subj":"T2","obj":"http://purl.obolibrary.org/obo/CHEBI_24433"}],"text":"s of the Hubei region in China when compared to the prevalence of the general population of that region. Unfortunately, in this retrospective study, follow-up data were not provided and a direct control group was not"}