PMC:7786642 / 1080-1249 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T14","span":{"begin":31,"end":133},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"evel (n = 32,844 small areas). We retrieved averaged NO2 and PM2.5 concentration during 2014–2018 from the Pollution Climate Mapping. We used Bayesian hierarchical model"}