PMC:7210464 / 53517-53646 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T482","span":{"begin":0,"end":129},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Regarding the environmental factors, we notice different significant mediating variables across the first and second sub-samples."}