PMC:7547912 / 1028-1171 JSONTXT

{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T15","span":{"begin":53,"end":56},"obj":"Chemical"},{"id":"T16","span":{"begin":62,"end":65},"obj":"Chemical"}],"attributes":[{"id":"A15","pred":"chebi_id","subj":"T15","obj":"http://purl.obolibrary.org/obo/CHEBI_16134"},{"id":"A16","pred":"chebi_id","subj":"T16","obj":"http://purl.obolibrary.org/obo/CHEBI_18422"}],"text":"and 15–58% in the mean concentration of PM2.5, PM10, NH3, and SO2 respectively during the confinement for the studied locations. The p values f"}